为什么我的DIV没有占满整个页面，而且我好像没听懂这节到底在讲什么

来源：2-1 swiper垂直滚动基本示例

Ting111

2020-09-26 13:09:58

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="../作业/swiper-5.4.5/package/css/swiper.min.css">
   <script src="../作业/swiper-5.4.5/package/js/swiper.min.js"></script>
    <style>
        body{
            height: 100%;
            width: 100%;
        }
        .box{
            height: 100%;
            width: 100%;
        }
        .container{
            height: 100%;
            width: 100%;
        }
    </style>
</head>
<body>
    <div class="container">
    <div class="box" id="box">1</div>
    <div class="box" id="box">2</div>
    <div class="box" id="box">3</div>
    </div>
    <script>
        var a=new Swiper('box');
    </script>
</body>
</html>

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