伸缩盒 

<!DOCTYPE html>
<html lang="en">
<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>Document</title>
    
</head>
<body>
    <h2>横向伸缩：</h2>
    <div class="flex">
        <div class="left"></div>
        <div class="cent"></div>
        <div class="right"></div>
    </div>
    <style>
        .flex{ display: flex; height: 100px; border:1px solid #ccc;}
        .flex div{ width:50px; height: 100px; border:1px solid #eee;}
        .flex .left{ flex:1;}
        .flex .cent{ flex:5;}
        .flex .right{ flex:1;}
    </style>
    <h2>纵向伸缩：</h2>
    <div class="v_flex">
        <div class="top"></div>
        <div class="mid"></div>
        <div class="bot"></div>
    </div>
    <style>
        .v_flex{ display: flex; flex-direction:column; height: 300px; margin-top:20px; border: 1px solid #ccc;}
        .v_flex div{ height: 50px; border:1px solid #eee;}
        .v_flex .mid{ flex: 1;}

    </style>
    
</body>
</html>

　　

posted @ 2019-04-29 14:44  l_strive  阅读(135)  评论(0)    收藏  举报