弹性盒子

弹性盒子
<!doctype html>
<html lang="zh-CN">
  <head>
    <!-- 必须的 meta 标签 -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Hello, world!</title>
    <style type="text/css">
        *{
            margin: 0;
            padding: 0;
        }
        .container{
            display:flex;   
            background-color: #f5f5f5 ; 
            flex-flow: row nowrap;
            align-items: flex-start;
        }
        .left,.right{
            height: 100vh ;
        }
        .left{
            background-color: blue;
            width: 100%;

        }
        .right{
            width:400px;
            background-color: aqua;
        }
        .left-content{
            display: flex;
            background-color: blueviolet;
            height: 100vh;
            flex-flow: column nowrap;
        }

        .left-1,.left-2{
            margin: 20px;
            height: 100vh;
            background-color: cornflowerblue;
        }
    </style>
  </head>
  <body>

    <div class="container">
        <div class="left">
            <div class="left-content">
                <div class="left-1">
                    left-1
                </div>
                <div class="left-2">
                    left-2
                </div>    
            </div>
        </div>
        <div class="right">

        </div>
    </div>
   
  </body>
</html>
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