站长资讯网本篇文章给大家分享12个有趣且实用的 CSS 小技巧，让前端开发更轻松，快来收藏吧，希望对大家有所帮助！
（推荐学习：css视频教程）
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://markodenic.com/man_working.png" alt="Image with box-shadow"> </div> <div> <div class="mb-1 text-center"> drop-shadow </div> <img class="drop-shadow" src="https://markodenic.com/man_working.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：
4. 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' style='fill:black;font-size:24px;'><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. 自定义选中样式
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">×</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样式：
<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. 动态工具提示
可以使用 CSS 函数 attr() 来创建动态的纯 CSS 工具提示 。
<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：
11. 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() 过滤器功能将输入图像转换为灰度。
（学习视频分享：web前端入门教程）
