flex实现两侧固定中间自适应

 
 
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0">
    <title></title>
    <!-- IMPORT CSS -->
    <link rel="stylesheet" href="css/reset.min.css">
    <style>
        /* html,
        body {
            overflow: hidden;
        } */
        .container {
            display: flex;
            justify-content: space-between;
            height: 100%;
        }
        .left,
        .right {
            flex: 0 0 200px;
            height: 200px;
            background: lightblue;
        }
        .center {
            flex: 1;
            min-height: 400px;
            background: lightsalmon;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="left"></div>
        <div class="center"></div>
        <div class="right"></div>
    </div>
</body>
</html>