10.26作业

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<style>
    .box1{
        background-color: red;
        flex: 1;
        /*占比1倍*/
    }
    .box2{
        background-color: yellow;
        flex: 3;
        /*占比3倍*/
    }
    .box3{
        background-color: green;
        flex: 1;
        /*占比1倍*/
    }
    .container{
        /*弹性盒模型*/
        display: flex;
        /*两边对齐中间留有空白*/
        /*place-content: space-between;*/
        /* 分散对齐 */
        /*place-content: space-around;*/
        /*平均对齐*/
        /*place-content: space-evenly;*/
    }
</style>
<body>
<div class="container">
    <div class="box1">box1</div>
    <div class="box2">box2</div>
    <div class="box3">box3</div>
</div>
</body>
</html>
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