lovecoding
/
W250913


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        h1{
            text-align: center;
            /* border:1px solid blue; */
            border-bottom: 3px solid blue;
            padding-bottom: 20px;
        }
        /* .line{
            height: 1px;
            background-color: blue;
        } */
        .box{
            width: 400px;
            margin: 0 auto;
        } 
        li{
            list-style: none;
            height: 70px;
            /* background-color: #999; */
            margin-bottom: 20px;
            padding-left: 20px;
            line-height: 70px;
            color: #fff;
            border-radius: 20px;
        }
        /* li{
            list-style: none;
            margin-top: 20px;
            padding:20px;
            background-color: #999;
        }  */

        
        /* 偶数项 even 、 2n */
        li:nth-child(even){
            background-color: #999;
        }
        /* 奇数项 odd 、 2n-1 */
        li:nth-child(odd){
            background-color: #333;
        }

        li:first-child{
            background-color: #007bff;
        }

        li:hover{
            background-color: #007bff;
        }
        li:last-child:hover::after{
            content: "最后一个";
        }
    </style>
</head>
<body>
    <h1>我的简单网页</h1>
    <!-- <div class="line"></div> -->
    <div class="box">
        <p>以下是一些列表项：</p>
        <ul>
            <li>列表项1</li>
            <li>列表项2</li>
            <li>列表项3</li>
            <li>列表项4</li>
            <li>列表项5</li>
        </ul>
    </div>
</body>
</html>