老师检查下代码，谢谢

来源：3-12 编程练习

不厌_

2021-05-21 11:15:07

相关代码：

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
<title>编程练习</title>
<style type="text/css">
        * {
            margin: 0px;
            padding: 0px;
        }

        .imooc {
            width: 1903;
            height: 4033;
            margin: 0px auto;
        }

        .fix {
            position: fixed;
            width: 224px;
            height: 364px;
            top: 50%;
            margin-top: -182px;

        }

        div.left-ad {
            left: 0px;
        }

        div.right-ad {
            right: 0px;
        }

    </style>
</head>
<body>
    <main class="imooc">
        <img src="http://climg.mukewang.com/59c9f7ce0001839219034033.png" alt="">
    </main>
    <aside>
        <!-- 左边广告 -->
        <div class="left-ad fix">
            <img src="http://climg.mukewang.com/5a3383d00001a3dd02240364.png" alt="">
        </div>
        <!-- 右边广告 -->
        <div class="right-ad fix">
            <img src="http://climg.mukewang.com/5a3383c70001f1b702240364.png" alt="">
        </div>
    </aside>
</body>
</html>