<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
/* 结构伪类选择器 权重 10*/
ul li:first-child {
color: cyan;
}
ul li:last-child {
color: red;
}
ul li:nth-child(8) {
color: green;
}
ul li:nth-child(even) {
background-color: indianred;
}
ul li:nth-child(odd) {
background-color: khaki;
}
ul li:nth-child(2n) {
border: 1px solid green;
}
ul li:nth-child(2n + 1) {
border: 1px solid gold;
}
ul li:nth-child(5n) {
text-align: center;
}
ul li:nth-child(n + 5) {
font-weight: bolder;
}
ul li:nth-child(-n + 5) {
height: 40px;
}
div span:nth-child(2) {
/* 注意 */
/* 第1个span是div的第2个孩子 */
background-color: coral;
}
div span:nth-of-type(2n + 1) {
/* 用法同 nth-child */
color: red;
}
</style>
</head>
<body>
<!-- 11 -->
<ul>
<!-- ul>li{$}*10 -->
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
<li>9</li>
<li>10</li>
</ul>
<div>
<p>我是第一个child</p>
<span>我是第1个span</span>
<span>我是第2个span</span>
<span>我是第3个span</span>
</div>
</body>
</html>
