flex 三列布局

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .main {
            height: 500px;
            background-color: blue;
            display: flex;
        }
        .left {
             200px;
            height: 500px;
            background-color: blue;
        }
        .middle {
            flex: 1;
            height: 500px;
            background-color: yellow;
        }
        .right {
             200px;
            height: 500px;
            background-color: blue;
        }
    </style>
</head>
<body>
<div class="main">
    <div class="left"></div>
    <div class="middle"></div>
    <div class="right"></div>
</div>


</body>
</html>
【推广】 免费学中医，健康全家人
原文地址：https://www.cnblogs.com/zhangyongxi/p/9549250.html