使用CSS3基本选择器
程序员文章站
2022-05-11 09:13:03
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<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="utf-8">
<title>使用CSS3基本选择器</title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
.clearfix:after,.clearfix:before{
display: table;
content: "";
}
.clearfix:after{
clear: both;
overflow: hidden;
}
.demo{
width: 250px;
border:1px solid #ccc;
padding: 10px;
margin: 20px auto;
}
.demo * {
background: orange;
}
li{
list-style: none outside none;
float: left;
height: 20px;
line-height: 20px;
width: 20px;
border-radius: 10px;
text-align: center;
background: #f36;
color: green;
margin-left: 5px;
}
ul{
background: grey;
}
#first{
background: lime;
color: #000;
}
#last{
background: #000;
color:lime;
}
.item{
background: green;
color: #fff;
font-weight: bold;
}
.item.important{
background: red;
}
</style>
</head>
<body>
<ul class="clearfix demo">
<li class="first" id="first">1</li>
<li class="active">2</li>
<li class="important item">3</li>
<li class="important">4</li>
<li class="item">5</li>
<li>6</li>
<li>7</li>
<li>8</li>
<li>9</li>
<li class="last" id="last">10</li>
</ul>
</body>
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