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Flex布局实战
橙汁的博客
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CSS

html,
body {
    max-width: 768px;
    min-width: 320px;
    margin: 0 auto;
    background-color: #e5e5e5
}

.w100 {
    width: 100%;
}

.m {
    margin: 0 auto;
}

.h3 {
    line-height: 34px;
    padding: 22px 0 12px;
    font-size: 18px;
    color: #888;
    font-weight: bold;
}

.padding-left-0 {
    padding-left: 0 !important;
}

a.more {
    line-height: 1em;
    text-align: center;
    background-color: #fff;
    padding: 7px 0;
    display: block
}


/* top */

.top {
    height: 45px;
    background-color: #2d353c;
    display: flex;
}

.top a:first-of-type,
.top a:last-of-type,
.top a:first-of-type img,
.top a:last-of-type img {
    width: 25px;
    height: 25px;
}

.top a:first-of-type,
.top a:last-of-type {
    margin: 9px 5px 0;
}

.top a:first-of-type img {
    border-radius: 50%;
}

.top a.logo {
    text-align: center;
    flex: 1;
}

.top a.logo img {
    height: 45px;
}


/* banner */

.banner {
    display: flex;
}

.banner img {
    width: 100%;
    display: block;
}


/* nav */

.nav {
    display: flex;
    background-color: #fff;
    padding: 10px 0;
}

.nav li {
    flex: 1;
    text-align: center;
}

.nav li img {
    width: 50%;
    margin-bottom: 6px;
}

.nav li a {
    color: #888;
    font-weight: 600;
}


/* course */

.course {
    display: flex;
    margin-bottom: 14px;
}

.course a {
    flex: 1;
}

.course a img {
    width: 100%;
}

.course a:first-of-type {
    padding-right: 5px;
}

.course a:last-of-type {
    padding-left: 5px;
}


/* course-list */

.course-list li {
    padding: 10px;
    background-color: #fff;
    margin-bottom: 10px;
}

.course-list li a {
    display: flex;
}

.course-list li a span {
    flex: .4;
}

.course-list li a img {
    width: 100%;
    display: block;
}

.course-list li a h2 {
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #888;
    font-size: 16px;
    overflow: hidden;
    padding-bottom: 6px;
}

.course-list .course-list-right {
    flex: .6;
    padding-left: 14px;
    overflow: hidden;
}

.course-list-right p {
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    font-size: 12px;
    color: #888;
}

.course-list-right-info {
    padding: 4px 0;
    overflow: hidden;
}

.course-list-right-info span {
    border-radius: 5px;
    background-color: #595757;
    color: #fff;
    font-size: 12px;
    padding: 4px;
}

.course-list-right-info em {
    font-size: 12px;
    color: #888;
    padding: 4px;
}

.index-article-list a {
    padding: 8px 5px;
    margin-bottom: 8px;
    display: flex;
    background-color: #fff;
    color: #888;
}

.index-article-list h2 {
    flex: .7;
    font-size: 14px;
    line-height: 1em;
}

.index-article-list span {
    flex: .3;
    line-height: 1em;
    padding-left: 5px;
    text-align: right
}

HTML

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="static/style/reset.css">
    <link rel="stylesheet" href="static/style/css.css">
</head>

<body>
    <!-- top -->
    <div class="w100 top ">
        <a href=""><img src="https://m.php.cn/static/images/user_avatar.jpg" alt=""></a>
        <a class="logo" href=""><img src="https://m.php.cn/static/images/logo.png" alt=""></a>
        <a href=""><img src="static/images/user-nav.jpg" alt=""></a>
    </div>
    <!-- banner -->
    <div class="w100 banner">
        <img src="https://m.php.cn/static/images/ico/1.jpg" alt="">
    </div>
    <!-- nav -->
    <ul class="nav">
        <li>
            <a href=""><img src="https://m.php.cn/static/images/ico/html.png" alt=""><br>HTML/CSS</a>
        </li>
        <li>
            <a href=""><img src="https://m.php.cn/static/images/ico/JavaScript.png" alt=""><br>JavaScript</a>
        </li>
        <li>
            <a href=""><img src="https://m.php.cn/static/images/ico/code.png" alt=""><br>服务端</a>
        </li>
        <li>
            <a href=""><img src="https://m.php.cn/static/images/ico/sql.png" alt=""><br>数据库</a>
        </li>
    </ul>
    <ul class="nav">
        <li>
            <a href=""><img src="https://m.php.cn/static/images/ico/app.png" alt=""><br>移动端</a>
        </li>
        <li>
            <a href=""><img src="https://m.php.cn/static/images/ico/manual.png" alt=""><br>手册</a>
        </li>
        <li>
            <a href=""><img src="https://m.php.cn/static/images/ico/tool2.png" alt=""><br>工具</a>
        </li>
        <li>
            <a href=""><img src="https://m.php.cn/static/images/ico/live.png" alt=""><br>直播</a>
        </li>
    </ul>
    <!-- title -->
    <h3 class="h3">推荐课程</h3>
    <div class="course">
        <a href=""><img src="https://img.php.cn/upload/course/000/000/001/5d242759adb88970.jpg" alt=""></a>
        <a href=""><img src="https://img.php.cn/upload/course/000/000/001/5d2426f409839992.jpg" alt=""></a>
    </div>
    <div class="course-list">
        <li>
            <a href="">
                <span><img src="https://img.php.cn/upload/course/000/000/035/5d2941e265889366.jpg" alt=""></span>
                <div class="course-list-right">
                    <h2>CI框架30分钟极速入门</h2>
                    <div class="course-list-right-info">
                        <span>中级</span>
                        <em>49900次播放</em>
                    </div>
                </div>
            </a>
        </li>
        <li>
            <a href="">
                <span><img src="https://img.php.cn/upload/course/000/000/035/5d2941e265889366.jpg" alt=""></span>
                <div class="course-list-right">
                    <h2>CI框架30分钟极速入门</h2>
                    <div class="course-list-right-info">
                        <span>中级</span>
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                    </div>
                </div>
            </a>
        </li>
    </div>
    <!-- title -->
    <h3 class="h3">最新更新</h3>
    <div class="course-list">
        <li>
            <a href="">
                <span><img src="https://img.php.cn/upload/course/000/000/035/5d2941e265889366.jpg" alt=""></span>
                <div class="course-list-right">
                    <h2>CI框架30分钟极速入门</h2>
                    <p>《Laravel 5.1/5.8速查表：https://www.php.cn/phpkj/laravel/cheatsheet58.html 》 手册简介：Laravel 5.8 在 Laravel 5.7 的基础上继续进行优化，包括引入新的 Eloquent 关联关系（has-one-through）、优化邮箱验证、基于约定的授权策略类自动注册、 DynamoDB 缓存及 Session 驱动、优化任务调度器的时区配置、支持分配多个认证 guard 到广播频道、PSR-16
                        缓存驱动规范等等。
                    </p>
                    <div class="course-list-right-info">
                        <span class="fl">中级</span>
                        <em class="fr">49900次播放</em>
                    </div>
                </div>
            </a>
        </li>
        <li>
            <a href="">
                <span><img src="https://img.php.cn/upload/course/000/000/035/5d2941e265889366.jpg" alt=""></span>
                <div class="course-list-right">
                    <h2>CI框架30分钟极速入门</h2>
                    <p>《Laravel 5.1/5.8速查表：https://www.php.cn/phpkj/laravel/cheatsheet58.html 》 手册简介：Laravel 5.8 在 Laravel 5.7 的基础上继续进行优化，包括引入新的 Eloquent 关联关系（has-one-through）、优化邮箱验证、基于约定的授权策略类自动注册、 DynamoDB 缓存及 Session 驱动、优化任务调度器的时区配置、支持分配多个认证 guard 到广播频道、PSR-16
                        缓存驱动规范等等。
                    </p>
                    <div class="course-list-right-info">
                        <span class="fl">中级</span>
                        <em class="fr">49900次播放</em>
                    </div>
                </div>
            </a>
        </li>
    </div>
    <!-- title -->
    <h3 class="h3">最新文章</h3>
    <div class="course-list">
        <li>
            <a href="">
                <div class="course-list-right padding-left-0">
                    <h2>CI框架30分钟极速入门</h2>
                    <div class="course-list-right-info">
                        <em>发布时间：2019-07-29</em>
                    </div>
                </div>
                <span><img src="https://img.php.cn/upload/course/000/000/035/5d2941e265889366.jpg" alt=""></span>
            </a>
        </li>
        <li>
            <a href="">
                <div class="course-list-right padding-left-0">
                    <h2>CI框架30分钟极速入门</h2>
                    <div class="course-list-right-info">
                        <em>发布时间：2019-07-29</em>
                    </div>
                </div>
                <span><img src="https://img.php.cn/upload/course/000/000/035/5d2941e265889366.jpg" alt=""></span>
            </a>
        </li>
    </div>
    <a class="more" href="">更多内容</a>
    <!-- title -->
    <h3 class="h3">最新文章</h3>
    <div class="index-article-list">
        <a href="">
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        </a>
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            <span>2019-09-07</span>
        </a>
        <a href="">
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        </a>
    </div>
    <a class="more" href="">更多内容</a>
    <!-- title -->
    <h3 class="h3">最新问答</h3>
    <div class="index-article-list">
        <a href="">
            <h2>mysql查询时间戳和日期的转换</h2>
            <span>2019-09-07</span>
        </a>
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            <span>2019-09-07</span>
        </a>
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            <span>2019-09-07</span>
        </a>
    </div>
    <a class="more" href="">更多内容</a>
</body>

20190910_看图王.jpg

Correction status：qualified

Teacher's comments：从效果上看是正确的, 但是代码有太多需要优化的部分, 相信随着学习的深入, 会越做越好的
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