其他---16从中间往两边延伸

<!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>
        .box{
            width:300px;
            height:100px;
            border:1px solid red;
            position: relative;
        }
        .box1{
            position:absolute;
            top:0px;
            left:50%;
            right:0px;
            bottom:0px;
            width:10px;
            background-color: red;
        }
        .box:hover>.box1{
            transition: all 3s;
            left:0px;
            width:100%;
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="box1"></div>
    </div>
</body>
</html>

posted @ 2022-03-24 09:45 !ment 阅读(42) 评论(0) 编辑收藏举报

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其他---16从中间往两边延伸