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HomeWeb Front-endHTML TutorialCSS3实战之一些常用Tips_html/css_WEB-ITnose

本文为部分翻译文章,主要内容来自于:css-protips,笔者自身也添加了一些自己的小的Tips。

使用:not()属性为导航添加或者去除边框

传统的方法是首先为每个li标签添加标签:

/* add border */.nav li {  border-right: 1px solid #666;}

然后用last-child伪属性作用于最后一个元素上:

/* remove border */.nav li:last-child {  border-right: none;}

代替的方法应该是使用not伪类去设置仅作用于部分元素的属性:

.nav li:not(:last-child) {  border-right: 1px solid #666;}
为body添加line-height属性

往往需要为p、h*这类标签单独的添加行高属性等,作为替代的是可以将它添加到body属性中,即:

body {  line-height: 1;}

通过这种方式文本类的元素可以自动继承该属性。

设置自动居中

任何一个元素的自动居中可以使用flex属性:

html, body {  height: 100%;  margin: 0;}body {  -webkit-align-items: center;    -ms-flex-align: center;    align-items: center;  display: -webkit-flex;  display: flex;}
使用逗号分割列表
ul > li:not(:last-child)::after {  content: ",";}
使用负的nth-child属性选择元素
li {  display: none;}/* select items 1 through 3 and display them */li:nth-child(-n+3) {  display: block;}
使用SVG作为Icon
.logo {  background: url("logo.svg");}

使用SVG作为图标可以达到自动缩放的效果。

文本显示的优化
html {  -moz-osx-font-smoothing: grayscale;  -webkit-font-smoothing: antialiased;  text-rendering: optimizeLegibility;}
使用max-height在单纯的CSS滑块上
.slider ul {  max-height: 0;  overlow: hidden;}.slider:hover ul {  max-height: 1000px;  transition: .3s ease; /* animate to max-height */}
继承box-sizing属性
html {  box-sizing: border-box;}*, *:before, *:after {  box-sizing: inherit;}
设置Table元素等宽
.calendar {  table-layout: fixed;}
使用Flexbox作为Margin Hacks
.list {  display: flex;  justify-content: space-between;}.list .person {  flex-basis: 23%;}
为空的Links添加默认内容
a[href^="http"]:empty::before {  content: attr(href);}
防止iOS设备上的元素不可点击

在iOS设备中,有时候Click事件会失效,需要设置一个专门的cursor属性:

cursor:pointer

不过需要注意的是,这个属性不可设置在Android设备上,如果设置在Android设备上,点击的时候会出现一片蓝色的背景。

防止iOS设备上输入失焦

在iOS设备中,有时候如果弹出了键盘会导致输入框失焦,即键盘上的内容无法显示在输入框内,需要进行以下覆盖:

* {  -webkit-user-select: none; /* prevent copy paste */}

变为

input[type="text"] {    -webkit-user-select: text;}
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