lovecoding
/
VIP24


			
				
					
						
						
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							<!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>
    *{
      margin: 0;
      padding: 0;
    }
    /* 关系选择符 */
    /* div + p {
      background: red;
    } */
    /* div ~ p {
      background: red;
    } */
    /* 属性选择器 */
    /* li[class]{
      background: red;
    } */
    /* li[class='aaa']{
      background: red;
    } */
    /* li[class~='a']{
      background: red;
    } */
    /* 以a为首个字母 */
    /* li[class^='a']{
      background: red;
    } */
    /* li[class*='a']{
      background: red;
    } */
    /* li[class$='b']{
      background: red;
    } */

    /* li:last-child{
      background: red;
    } */
    /* li:nth-child(4){
      background: red;
    } */
    /* li:nth-child(even){
      background: red;
    } */
    /* li:nth-child(odd){
      background: orange;
    } */

    #div1::after {
      content: 'xixixi';
      background: pink;
    }
    #div1::before{
      content: 'hahahhah';
      background: green;
    }
  </style>
</head>
<body>
  <!-- 
    id选择器
    class选择器
    元素选择器
    关系选择器
    属性选择器
    伪类选择器
  -->
  <p>000000000</p>
  <div>111111111</div>
  <div>xxxxxxxx</div>
  <p>2222222222</p>
  <p>3333333333</p>
  <p>4444444444</p>
  <br>
  <ul>
    <li class="aabb">11111</li>
    <li>22222</li>
    <li class="ba">33333</li>
    <li>44444</li>
    <li class="aaa">55555</li>
    <li class="bbb">66666</li>
    <li class="ab">777777</li>
    <li>8888</li>
    <li class="a">999999</li>
    <li class=" a b">00000</li>
    <div id="div1">哈哈哈哈哈哈哈哈哈</div>
  </ul>
</body>
</html>