html之常用布局实例

1. 制作一个在线QQ客服的固定定位(QQ客服用图片就行)
2. 仿课堂案例写一个三行三列的定位布局, 色块或边框代表内容就可以;

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./font_icon_qq/iconfont.css">
</head>
<style>
    *{
        /* 初始化 */
        margin: 0px;
        padding: 0;
        box-sizing: border-box;
    }
    header, footer{
        height: 5rem;
        background-color: lightblue;
    }
    .container{
        width: 80%;
        position: relative;
        margin: 0.5em auto;
        min-height: calc(100vh - 11rem);
    }
    .container aside{
        position: absolute;
        width: 200px;
        min-height: inherit;
        background-color: magenta;
    }
    /* 左 */
    .container aside:first-of-type{
        left: 0;
        top: 0;
    }
    /* 中 */
    .container main{
        position: absolute;
        min-height: inherit;
        left: 205px;
        right: 205px;
        background-color: mediumaquamarine;
    }
    /* 右 */
    .container aside:last-of-type{
        right: 0;
        top: 0;
    }
    .qq{
        position:fixed;
        z-index: 999;
        left: 2rem;
        top: 40rem;
    }
</style>
<body>
    <header>页眉</header>
    <div class="container">
        <aside>左</aside>
        <main>中</main>
        <aside>右</aside>
    </div>
    <div class="qq">
        <div><span class="iconfont icon-qq"></span></div>
        <div><span class="iconfont icon-external_qq"></span></div>
    </div>
    <footer>页脚</footer>
</body>
</html>

Correcting teacher：

PHPz

Correction status：qualified

Teacher's comments：

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html之常用布局实例