有趣且实用的 CSS 小技巧

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。

6长生十万年. 自appearance定义选中样式

CSS 伪元素::selection，可以用来自定义用户选中文档的高亮样式。

<div class="wrapper">
  <div>
    <p>
     默认高亮
    </p>
    <p class="custom-highlighting">
      自定义高亮
    </p>
  </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
p {
  font-size: 2rem;
  font-family: sans-serif;
}
.custom-highlighting::selection {
  background-color: #8e44ad;
  color: #fff;
}

实现效果：

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。

还可以使用“-webkit-line-clamp”属性将文本截断为特定的行数。文本将在截断的地方会显示省略号：

div {
  width: 200px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

实现效果：

6长生十万年. 自appearance定义选中样式

CSS 伪元素::selection，可以用来自定义用户选中文档的高亮样式。

<div class="wrapper">
  <div>
    <p>
     默认高亮
    </p>
    <p class="custom-highlighting">
      自定义高亮
    </p>
  </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
p {
  font-size: 2rem;
  font-family: sans-serif;
}
.custom-highlighting::selection {
  background-color: #8e44ad;
  color: #fff;
}

实现效果：

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。

5. 截断文本

一行文本溢出隐藏：

<div>
	白日依山尽，黄河入海流。欲穷千里目，更上一层楼。
</div>

div {
  width: 200px;
  background-color: #fff;
  padding: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

实现效果：

还可以使用“-webkit-line-clamp”属性将文本截断为特定的行数。文本将在截断的地方会显示省略号：

div {
  width: 200px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

实现效果：

6长生十万年. 自appearance定义选中样式

CSS 伪元素::selection，可以用来自定义用户选中文档的高亮样式。

<div class="wrapper">
  <div>
    <p>
     默认高亮
    </p>
    <p class="custom-highlighting">
      自定义高亮
    </p>
  </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
p {
  font-size: 2rem;
  font-family: sans-serif;
}
.custom-highlighting::selection {
  background-color: #8e44ad;
  color: #fff;
}

实现效果：

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。

4app小胖子. 自定义光标

我们可以使用自定义图像，甚至表情符号来作为光标。

<div class="wrapper">
  <div class="tile">
    Default
  </div>
  <div class="tile tile-image-cursor">
    Image
  </div>
  <div class="tile tile-emoji-cursor">
    Emoji
  </div>
</div>

.wrapper {
  display: flex;
  height: 100vh;
  align-items: center;
  justify-content: center;
  background: #4776e6;
  background: linear-gradient(to right, #4776e6, #8e54e9);
  padding: 0 10px;
}
.tile {
    width: 200px;
    height: 200px;display: flex;
    align-items: center;
    justify-content: center;
    background-color: #de5448;
    margin-right: 10px;color: #fff;
    font-size: 1.4em;
    text-align: center;
  }
.tile-image-cursor {
  background-color: #1da1f2;
  cursor: url(https://picsum.photos/20/20), auto;
}
.tile-emoji-cursor {
  background-color: #4267b2;
  cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'  width='40' height='48' viewport='0 0 100 100'><text y='50%'></text></svg>"), auto;
}

实现效果：

5. 截断文本

一行文本溢出隐藏：

<div>
	白日依山尽，黄河入海流。欲穷千里目，更上一层楼。
</div>

div {
  width: 200px;
  background-color: #fff;
  padding: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

实现效果：

还可以使用“-webkit-line-clamp”属性将文本截断为特定的行数。文本将在截断的地方会显示省略号：

div {
  width: 200px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

实现效果：

6长生十万年. 自appearance定义选中样式

CSS 伪元素::selection，可以用来自定义用户选中文档的高亮样式。

<div class="wrapper">
  <div>
    <p>
     默认高亮
    </p>
    <p class="custom-highlighting">
      自定义高亮
    </p>
  </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
p {
  font-size: 2rem;
  font-family: sans-serif;
}
.custom-highlighting::selection {
  background-color: #8e44ad;
  color: #fff;
}

实现效果：

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。

3. 平滑滚动

无需 JavaScript 即可实现平滑滚动，只需一行 CSS：scroll-behavior: smooth；

<nav>
  Scroll to: 
  <a href="#sectionA" class="link bg-red">A</a>
  <a href="#sectionB" class="link bg-blue">B</a>
  <a href="#sectionC" class="link bg-green">C</a>
</nav>
<div class="wrapper">
  <div id="sectionA" class="section bg-red">A</div>
  <div id="sectionB" class="section bg-blue">B</div>
  <div id="sectionC" class="section bg-green">C</div>
</div>

html {
  scroll-behavior: smooth;
}
nav {
  position: fixed;
  left: calc(50vw - 115px);
  top: 0;
  width: 200px;
  text-align: center;
  padding: 15px;
  background: #fff;
  box-shadow: 0 2px 5px 1px rgba(0, 0, 0, 0.2);
}
nav .link {
  padding: 5px;
  color: white;
}
.section {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 5em;
  text-shadow:
    0px 2px 0px #b2a98f,
    0px 4px 3px rgba(0,0,0,0.15),
    0px 8px 1px rgba(0,0,0,0.1);
}
.bg-red {
  background: #de5448;
}
.bg-blue {
  background: #4267b2;
}
.bg-green {
  background: #4CAF50;
}

实现效果：

4app小胖子. 自定义光标

我们可以使用自定义图像，甚至表情符号来作为光标。

<div class="wrapper">
  <div class="tile">
    Default
  </div>
  <div class="tile tile-image-cursor">
    Image
  </div>
  <div class="tile tile-emoji-cursor">
    Emoji
  </div>
</div>

.wrapper {
  display: flex;
  height: 100vh;
  align-items: center;
  justify-content: center;
  background: #4776e6;
  background: linear-gradient(to right, #4776e6, #8e54e9);
  padding: 0 10px;
}
.tile {
    width: 200px;
    height: 200px;display: flex;
    align-items: center;
    justify-content: center;
    background-color: #de5448;
    margin-right: 10px;color: #fff;
    font-size: 1.4em;
    text-align: center;
  }
.tile-image-cursor {
  background-color: #1da1f2;
  cursor: url(https://picsum.photos/20/20), auto;
}
.tile-emoji-cursor {
  background-color: #4267b2;
  cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'  width='40' height='48' viewport='0 0 100 100'><text y='50%'></text></svg>"), auto;
}

实现效果：

5. 截断文本

一行文本溢出隐藏：

<div>
	白日依山尽，黄河入海流。欲穷千里目，更上一层楼。
</div>

div {
  width: 200px;
  background-color: #fff;
  padding: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

实现效果：

还可以使用“-webkit-line-clamp”属性将文本截断为特定的行数。文本将在截断的地方会显示省略号：

div {
  width: 200px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

实现效果：

6长生十万年. 自appearance定义选中样式

CSS 伪元素::selection，可以用来自定义用户选中文档的高亮样式。

<div class="wrapper">
  <div>
    <p>
     默认高亮
    </p>
    <p class="custom-highlighting">
      自定义高亮
    </p>
  </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
p {
  font-size: 2rem;
  font-family: sans-serif;
}
.custom-highlighting::selection {
  background-color: #8e44ad;
  color: #fff;
}

实现效果：

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。

2. 设置阴影

当使用透明图像时，可以使用 drop-shadow() 函数在图像上创陈思思建阴影，而不是使用 box shadow 属性在元素的整个框后面创建矩形阴影：

<div class="wrapper">
  <div class="mr-2">
    <div class="mb-1 text-center">
      box-shadow
    </div>
    <img class="box-shadow" src="https://www.6hu.cc/storage/2022/03/26582-WBNiMg.png" alt="Image with box-shadow">
  </div>
  <div>
    <div class="mb-1 text-center">
      drop-shadow
    </div>
    <img class="drop-shadow" src="https://www.6hu.cc/storage/2022/03/26582-WBNiMg.png" alt="Image with drop-shadow">
  </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-2 {
  margin-right: 2em;
}
.mb-1 {
  margin-bottom: 1em;
}
.text-center {
  text-align: center;
}
.box-shadow {
  box-shadow: 2px 4px 8px #585858;
}
.drop-shadow {
  filter: drop-shadow(2px 4px 8px #585858);
}

对比效果：

3. 平滑滚动

无需 JavaScript 即可实现平滑滚动，只需一行 CSS：scroll-behavior: smooth；

<nav>
  Scroll to: 
  <a href="#sectionA" class="link bg-red">A</a>
  <a href="#sectionB" class="link bg-blue">B</a>
  <a href="#sectionC" class="link bg-green">C</a>
</nav>
<div class="wrapper">
  <div id="sectionA" class="section bg-red">A</div>
  <div id="sectionB" class="section bg-blue">B</div>
  <div id="sectionC" class="section bg-green">C</div>
</div>

html {
  scroll-behavior: smooth;
}
nav {
  position: fixed;
  left: calc(50vw - 115px);
  top: 0;
  width: 200px;
  text-align: center;
  padding: 15px;
  background: #fff;
  box-shadow: 0 2px 5px 1px rgba(0, 0, 0, 0.2);
}
nav .link {
  padding: 5px;
  color: white;
}
.section {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 5em;
  text-shadow:
    0px 2px 0px #b2a98f,
    0px 4px 3px rgba(0,0,0,0.15),
    0px 8px 1px rgba(0,0,0,0.1);
}
.bg-red {
  background: #de5448;
}
.bg-blue {
  background: #4267b2;
}
.bg-green {
  background: #4CAF50;
}

实现效果：

4app小胖子. 自定义光标

我们可以使用自定义图像，甚至表情符号来作为光标。

<div class="wrapper">
  <div class="tile">
    Default
  </div>
  <div class="tile tile-image-cursor">
    Image
  </div>
  <div class="tile tile-emoji-cursor">
    Emoji
  </div>
</div>

.wrapper {
  display: flex;
  height: 100vh;
  align-items: center;
  justify-content: center;
  background: #4776e6;
  background: linear-gradient(to right, #4776e6, #8e54e9);
  padding: 0 10px;
}
.tile {
    width: 200px;
    height: 200px;display: flex;
    align-items: center;
    justify-content: center;
    background-color: #de5448;
    margin-right: 10px;color: #fff;
    font-size: 1.4em;
    text-align: center;
  }
.tile-image-cursor {
  background-color: #1da1f2;
  cursor: url(https://picsum.photos/20/20), auto;
}
.tile-emoji-cursor {
  background-color: #4267b2;
  cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'  width='40' height='48' viewport='0 0 100 100'><text y='50%'></text></svg>"), auto;
}

实现效果：

5. 截断文本

一行文本溢出隐藏：

<div>
	白日依山尽，黄河入海流。欲穷千里目，更上一层楼。
</div>

div {
  width: 200px;
  background-color: #fff;
  padding: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

实现效果：

还可以使用“-webkit-line-clamp”属性将文本截断为特定的行数。文本将在截断的地方会显示省略号：

div {
  width: 200px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

实现效果：

6长生十万年. 自appearance定义选中样式

CSS 伪元素::selection，可以用来自定义用户选中文档的高亮样式。

<div class="wrapper">
  <div>
    <p>
     默认高亮
    </p>
    <p class="custom-highlighting">
      自定义高亮
    </p>
  </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
p {
  font-size: 2rem;
  font-family: sans-serif;
}
.custom-highlighting::selection {
  background-color: #8e44ad;
  color: #fff;
}

实现效果：

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。

今天来看一些有趣且实用的 CSS 小技巧！

1. 打字效果

代码实现：

<div class="wrapper">
    <div class="typing-demo">
      有趣且实用的 CSS 小技巧
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.typing-demo {
  width: 22ch;
  animation: typing 2s steps(22), blink .5s step-end infinite alternate;
  white-space: nowrap;
  overflow: hidden;
  border-right: 3px solid;
  font-family: monospace;
  font-size: 2em;
}
@keyframes typing {
  from {
    width: 0
  }
}
@keyframes blink {
  50% {
    border-color: transparent
  }
}

实现效果：

2. 设置阴影

当使用透明图像时，可以使用 drop-shadow() 函数在图像上创陈思思建阴影，而不是使用 box shadow 属性在元素的整个框后面创建矩形阴影：

<div class="wrapper">
  <div class="mr-2">
    <div class="mb-1 text-center">
      box-shadow
    </div>
    <img class="box-shadow" src="https://www.6hu.cc/storage/2022/03/26582-WBNiMg.png" alt="Image with box-shadow">
  </div>
  <div>
    <div class="mb-1 text-center">
      drop-shadow
    </div>
    <img class="drop-shadow" src="https://www.6hu.cc/storage/2022/03/26582-WBNiMg.png" alt="Image with drop-shadow">
  </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-2 {
  margin-right: 2em;
}
.mb-1 {
  margin-bottom: 1em;
}
.text-center {
  text-align: center;
}
.box-shadow {
  box-shadow: 2px 4px 8px #585858;
}
.drop-shadow {
  filter: drop-shadow(2px 4px 8px #585858);
}

对比效果：

3. 平滑滚动

无需 JavaScript 即可实现平滑滚动，只需一行 CSS：scroll-behavior: smooth；

<nav>
  Scroll to: 
  <a href="#sectionA" class="link bg-red">A</a>
  <a href="#sectionB" class="link bg-blue">B</a>
  <a href="#sectionC" class="link bg-green">C</a>
</nav>
<div class="wrapper">
  <div id="sectionA" class="section bg-red">A</div>
  <div id="sectionB" class="section bg-blue">B</div>
  <div id="sectionC" class="section bg-green">C</div>
</div>

html {
  scroll-behavior: smooth;
}
nav {
  position: fixed;
  left: calc(50vw - 115px);
  top: 0;
  width: 200px;
  text-align: center;
  padding: 15px;
  background: #fff;
  box-shadow: 0 2px 5px 1px rgba(0, 0, 0, 0.2);
}
nav .link {
  padding: 5px;
  color: white;
}
.section {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 5em;
  text-shadow:
    0px 2px 0px #b2a98f,
    0px 4px 3px rgba(0,0,0,0.15),
    0px 8px 1px rgba(0,0,0,0.1);
}
.bg-red {
  background: #de5448;
}
.bg-blue {
  background: #4267b2;
}
.bg-green {
  background: #4CAF50;
}

实现效果：

4app小胖子. 自定义光标

我们可以使用自定义图像，甚至表情符号来作为光标。

<div class="wrapper">
  <div class="tile">
    Default
  </div>
  <div class="tile tile-image-cursor">
    Image
  </div>
  <div class="tile tile-emoji-cursor">
    Emoji
  </div>
</div>

.wrapper {
  display: flex;
  height: 100vh;
  align-items: center;
  justify-content: center;
  background: #4776e6;
  background: linear-gradient(to right, #4776e6, #8e54e9);
  padding: 0 10px;
}
.tile {
    width: 200px;
    height: 200px;display: flex;
    align-items: center;
    justify-content: center;
    background-color: #de5448;
    margin-right: 10px;color: #fff;
    font-size: 1.4em;
    text-align: center;
  }
.tile-image-cursor {
  background-color: #1da1f2;
  cursor: url(https://picsum.photos/20/20), auto;
}
.tile-emoji-cursor {
  background-color: #4267b2;
  cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'  width='40' height='48' viewport='0 0 100 100'><text y='50%'></text></svg>"), auto;
}

实现效果：

5. 截断文本

一行文本溢出隐藏：

<div>
	白日依山尽，黄河入海流。欲穷千里目，更上一层楼。
</div>

div {
  width: 200px;
  background-color: #fff;
  padding: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

实现效果：

还可以使用“-webkit-line-clamp”属性将文本截断为特定的行数。文本将在截断的地方会显示省略号：

div {
  width: 200px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

实现效果：

6长生十万年. 自appearance定义选中样式

CSS 伪元素::selection，可以用来自定义用户选中文档的高亮样式。

<div class="wrapper">
  <div>
    <p>
     默认高亮
    </p>
    <p class="custom-highlighting">
      自定义高亮
    </p>
  </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
p {
  font-size: 2rem;
  font-family: sans-serif;
}
.custom-highlighting::selection {
  background-color: #8e44ad;
  color: #fff;
}

实现效果：

7. CSS 模态框

我仓鼠饲养八大禁忌们可以使用 CSS 中的 :target 伪元素来创建一个模态框。

<div class="wrapper">
    <a href="#demo-modal">Open Modal</a>
</div>
<div id="demo-modal" class="modal">
    <div class="modal__content">
        <h1>CSS Modal</h1>
        <p>hello world</p>
        <a href="#" class="modal__close">&times;</a>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, #834d9b, #d04ed6);
}
.wrapper a {
  display: inline-block;
  text-decoration: none;
  padding: 15px;
  background-color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  color: #585858;
  font-family: 'Roboto', sans-serif;
}
.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
}
.modal:target {
  visibility: visible;
  opacity: 1;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 500px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}

实现效果：

8. 空元素样式

可以使用 :empty 选择器来设置完全没有子元素或文本的元素的辰时是几点到几点样式从山神开始的诸天之旅：

<div class="wrapper">
  <div class="box"></div>
  <div class="box">白日依山尽，黄河入海流。欲穷千里目，更上一层楼。</div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  display: inline-block;
  background: #999;
  border: 1px solid #585858;
  height: 200px;
  width: 200px;
  margin-right: 15px;
}
.box:empty {
  background: #fff;
}

实现效果：

9. 创建自定义滚动条

<div class="wrapper">
    <div>
      <div class="tile mr-1">
        <div class="tile-content">
          默认滚动条
        </div>
      </div>
      <div class="tile tile-custom-scrollbar">
        <div class="tile-content">
          自定义滚动条
        </div>
      </div>
    </div>
</div>

.wrapper {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mr-1 {
  margin-right: 1em;
}
.tile {
  overflow: auto;
  display: inline-block;
  background-color: #ccc;
  height: 200px;
  width: 180px;
}
.tile-custom-scrollbar::-webkit-scrollbar {
  width: 12px;
  background-color: #eff1f5;
}
.tile-custom-scrollbar::-webkit-scrollbar-track{
  border-radius: 3px;
  background-color: transparent;
}
.tile-custom-scrollbar::-webkit-scrollbar-thumb{
  border-radius:5px;
  background-color:#515769;
  border:2px solid #eff1f5
}
.tile-content {
  padding: 20px;
  height: 500px;
}

实现效果：

10.javascript 动态工具提示

可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工appearance具提示 。

<h1>
  HTML/CSS tooltip
</h1>
<p>
  Hover <span class="tooltip" data-tooltip="Tooltip Content">Here</span> to see the tooltip.
</p>
<p>
  You can also hover <span class="tooltip" data-tooltip="This is another Tooltip Content">here</span> to see another example.
</p>

.tooltip {
  position: relative;
  border-bottom: 1px dotted black;
}
.tooltip:before {
  content: attr(data-tooltip); 
  position: absolute;
  width: 100px;
  background-color: #062B45;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 1.2;
  border-radius: 6px;
  z-index: 1;
  opacity: 0;
  transition: opacity .6s;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  font-size: 0.75em;
  visibility: hidden;
}
.tooltip:after {
  content: "";
  position: absolute;
  bottom: 75%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  opacity: 0;
  transition: opacity .6s;
  border-color: #062B45 transparent transparent transparent;
  visibility: hidden;
}
.tooltip:hover:before, 
.tooltip:hover:after {
  opacity: 1;
  visibility: visible;
}

实现效果：

1http://192.168.1.1登录1. 圆形渐变边框

<div class="box gradient-border">
  炫酷渐变边框
</div>

.gradient-border {
  border: solid 5px transparent;
  border-radius: 10px;
  background-image: linear-gradient(white, white), 
    linear-gradient(315deg,#833ab4,#fd1d1d 50%,#fcb045);
  background-origin: border-box;
  background-clip: content-box, border-box;
}
.box {
  width: 350px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 100px auto;
}

实现效果：

12. 灰度图片

可以使用 grayscale(javascript) 过滤器功能将输入图像转换为灰度。

APP CSS HTTP Java JavaScript

it老兵哥

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