提高您CSS开发能力的技巧集_html/css_WEB-ITnose
0. 目录
原文:github的A collection of useful CSS protips
译者:爱前端乐分享的FedFun,意译为主不当之处,欢迎指正!
译言:提高您CSS开发能力的技巧集,希望对大家有所帮助。
2.1 使用:not()给导航条添加间隔线
我们通常使用如下代码给导航条增加间隔线
/* add border */.nav li { border-right: 1px solid #666;}/* remove border */.nav li:last-child { border-right: none;}
现在,我们可以使用:not()选择符简化操作,代码简洁易读,不错吧。
.nav li:not(:last-child) { border-right: 1px solid #666;}
或者,我们增加左边框。
.nav li:first-child ~ li { border-left: 1px solid #666;}
2.2 给body元素增加Line-Height属性
我们不需要给每个p、h1元素设置line-height,只需要给body元素设置,其他文本元素会自动继承body的特性。
body { line-height: 1;}
2.3 任意元素垂直居中
不是黑魔法,确实可以让任意元素垂直居中。
html, body { height: 100%; margin: 0;}body { -webkit-align-items: center; -ms-flex-align: center; align-items: center; display: -webkit-flex; display: flex;}
2.4 逗号分隔的列表
让html列表貌似现实中逗号分隔的列表
ul > li:not(:last-child)::after { content: ",";}
2.5 在nth-child中使用负数
在css的nth-child中使用负数选择1~n条记录。
li { display: none;}/* select items 1 through 3 and display them */li:nth-child(-n+3) { display: block;}
2.6 使用svg图标
没有理由不使用svg图标,在大多数分辨率和浏览器里能够实现缩放,甚至兼容到IE9,所以不用再用.png、.gif等等。
.logo { background: url("logo.svg");}
2.7 文本显示优化
一些字体不能再所有设备中最优展示,所以需要设置。
html { -moz-osx-font-smoothing: grayscale; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;}
注意optimizeLegibility属性值的使用问题,同时IE/Edge不支持text-rendering。
2.8 在Pure CSS Sliders中使用max-height
使用max-height实现隐藏、显示的动画。
.slider ul { max-height: 0; overlow: hidden;}.slider:hover ul { max-height: 1000px; transition: .3s ease;}
参见本博《Auto值的CSS3 Transition解决方案》
2.9 初始化box-sizing
从html中继承box-sizing属性,这样的话,后期维护比较方便。
html { box-sizing: border-box;}*, *:before, *:after { box-sizing: inherit;}
2.10 表格单元格等宽
.calendar { table-layout: fixed;}
2.11 使用Flexbox摆脱各种Margin Hacks
在实现侧栏时,我们不再需要各种nth-、first-和last-child等设置margin,可以使用Flexbox轻松实现均匀分布。
.list { display: flex; justify-content: space-between;}.list .person { flex-basis: 23%;}
2.12 给空连接使用属性选择符
对于那些拥有href属性但是内容为空的a,自动添加内容。
a[href^="http"]:empty::before { content: attr(href);}
非常方便,是吧。
3. 声明
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