web网页设计求代码！

hover属性加a标签实现

写了个demo给你参考下思路，不懂再问

<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title></title>
    <style type="text/css">
        *{
            margin: 0;
            padding: 0;
            list-style: none;
        }
        li{
            width: 100px;
            height: 30px;
            text-align: center;
            float: left;
        }
        .li1{
            background: lightblue;
        }
        .li2{
            background: lightgreen;
        }
        .li3{
            background: lightcoral;
        }
        li:hover{
            background: black;
            color: white;
        }
    </style>
</head>
<body>
    <div class="box">
        <ul>
            <li class="li1">111</li>
            <li class="li2">222</li>
            <li class="li3">333</li>
        </ul>   
    </div>
</body>
</html>

这是整个一个网页设计题我大一混子没有思路他这个框架我不知道用什么搞😶