1.黑白图像 img.desaturate { filter: grayscale(100%); -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -ms-filter: grayscale(100%); -o-filter: grayscale(100%); } 2. 使用 :not() 在菜单上应用/取消应用边框 /* add border */ .nav li { border-right: 1px solid #666; } .nav li:not(:last-child) { border-right: 1px solid #666; } 3. 页面顶部阴影 body:before { content: ""; position: fixed; top: -10px; left: 0; width: 100%; height: 10px; -webkit-box-shadow: 0px 0px 10px rgba(0,0,0,.8); -moz-box-shadow: 0px 0px 10px rgba(0,0,0,.8); box-shadow: 0px 0px 10px rgba(0,0,0,.8); z-index: 100; } 4.给 body 添加行高 body { line-height: 1; } 5.所有一切都垂直居中 html, body { height: 100%; margin: 0; } body { -webkit-align-items: center; -ms-flex-align: center; align-items: center; display: -webkit-flex; display: flex; } 6.逗号分隔的列表 ul > li:not(:last-child)::after { content: ","; } 7.使用负的 nth-child 选择项目 li { display: none; } /* select items 1 through 3 and display them */ li:nth-child(-n+3) { display: block; } 8.对图标使用 SVG .logo { background: url("logo.svg"); } 9.优化显示文本 html { -moz-osx-font-smoothing: grayscale; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; } 10.对纯 CSS 滑块使用 max-height .slider ul { max-height: 0; overlow: hidden; } .slider:hover ul { max-height: 1000px; transition: .3s ease; } 11.继承 box-sizing html { box-sizing: border-box; } *, *:before, *:after { box-sizing: inherit; } 12.表格单元格等宽 .calendar { table-layout: fixed; } 13.用 Flexbox 摆脱外边距的各种 hack .list { display: flex; justify-content: space-between; } .list .person { flex-basis: 23%; } 14.使用属性选择器用于空链接 a[href^="http"]:empty::before { content: attr(href); } 15.检测鼠标双击 HTML <div class="test3"> <span><input type="text" value=" " readonly="true" /> <a href="http://renpingjun.com">Double click me</a></span> </div> CSS .test3 span { position: relative; } .test3 span a { position: relative; z-index: 2; } .test3 span a:hover, .test3 span a:active { z-index: 4; } .test3 span input { background: transparent; border: 0; cursor: pointer; position: absolute; top: -1px; left: 0; width: 101%; /* Hacky */ height: 301%; /* Hacky */ z-index: 3; } .test3 span input:focus { background: transparent; border: 0; z-index: 1; } 16.CSS 写出三角形 /* create an arrow that points up */ div.arrow-up { width:0px; height:0px; border-left:5px solid transparent; /* left arrow slant */ border-right:5px solid transparent; /* right arrow slant */ border-bottom:5px solid #2f2f2f; /* bottom, add background color here */ font-size:0px; line-height:0px; } /* create an arrow that points down */ div.arrow-down { width:0px; height:0px; border-left:5px solid transparent; border-right:5px solid transparent; border-top:5px solid #2f2f2f; font-size:0px; line-height:0px; } /* create an arrow that points left */ div.arrow-left { width:0px; height:0px; border-bottom:5px solid transparent; /* left arrow slant */ border-top:5px solid transparent; /* right arrow slant */ border-right:5px solid #2f2f2f; /* bottom, add background color here */ font-size:0px; line-height:0px; } /* create an arrow that points right */ div.arrow-right { width:0px; height:0px; border-bottom:5px solid transparent; /* left arrow slant */ border-top:5px solid transparent; /* right arrow slant */ border-left:5px solid #2f2f2f; /* bottom, add background color here */ font-size:0px; line-height:0px; } 17.CSS3 calc() 的使用 /* basic calc */ .simpleBlock { width: calc(100% - 100px); } /* calc in calc */ .complexBlock { width: calc(100% - 50% / 3); padding: 5px calc(3% - 2px); margin-left: calc(10% + 10px); } 18.文本渐变 h2[data-text] { position: relative; } h2[data-text]::after { content: attr(data-text); z-index: 10; color: #e3e3e3; position: absolute; top: 0; left: 0; -webkit-mask-image: -webkit-gradient(linear, left top, left bottom, from(rgba(0,0,0,0)), color-stop(50%, rgba(0,0,0,1)), to(rgba(0,0,0,0)));} 19.禁用鼠标事件 .disabled { pointer-events: none; } 20.模糊文本 .blur { color: transparent; text-shadow: 0 0 5px rgba(0,0,0,0.5); }