CSS flex 弹性布局和 grid 网格布局 - PHP学习

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1.flex 弹性布局

flex 弹性盒子布局是一种按行或按列布局元素的方法，元素可以膨胀或者收缩来适应空间

使用 flex 布局实现 PC 端三列布局

<body>
 <!--页眉-->
  <header>
    <a href="">LOGO</a>
    <a href="">新闻</a>
    <a href="">视频</a>
    <a href="">地图</a>
    <a href="">贴吧</a>
    <a href="">学术</a>
    <a href="">更多</a>
    <a href="">登录</a>
  </header>
  <!--主体-->
  <div class="container">
    <!--左边栏-->
    <aside>左边栏</aside>
    <!--主题内容区-->
    <main>主体</main>
    <!--右边栏-->
    <aside>右边栏</aside>
  </div>
  <!--页脚-->
  <footer>
    <div class="about">
      <a href="">关于我们</a>
      <a href="">常见问题</a>
      <a href="">反馈意见</a>
    </div>
    <p>Copyright © 2017-2020 xxxx 版权所有</p>
  </footer>
</body>

CSS 样式如下:

/*初始化*/
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
a {
    text-decoration: none;
    color: #666;
}
body {
    width: 1050px;
    /*转化为flex弹性盒子*/
    display: flex;
    /*主轴垂直*/
    flex-flow: column nowrap;
    margin: auto;
    background-color: white;
}
header,
footer {
    height: 50px;
    background-color: lightblue;
}
header {
    /*页头转换为flex容器*/
    display: flex;
    /*水平对齐*/
    /*justify-content: center;*/
    /*垂直对齐*/
    align-items: center;
}
header > a {
    /*禁止放大,允许缩小*/
    flex: 0 1 100px;
    /*文本居中*/
    text-align: center;
}
header > a:hover:not(:first-of-type) {
    color: red;
}
header > a:first-of-type {
    margin-right: 50px;
}
header > a:last-of-type {
    margin-left: auto;
}
.container {
    display: flex;
    min-height: 500px;
    justify-content: space-between;
    /*flex-flow: row nowrap;*/
}
.container > aside {
    flex: 0 0 200px;
    background-color: lightyellow;
}
.container > main {
    flex: 0 0 600px;
    background-color: wheat;
}
footer {
    display: flex;
    flex-flow: column nowrap;
    /*水平垂直居中*/
    text-align: center;
    justify-content: center;
}
footer > .about {
    display: flex;
    justify-content: center;
}
footer > .about > a {
    /*设置左右边距*/
    margin: 0 20px;
}
footer > .about > a:hover {
    color: violet;
}
/*媒体查询*/
/*当最大宽度900是,隐藏右边栏*/
@media screen and (max-width: 900px) {
    .container > aside:last-of-type {
    display: none;
    }
    main {
    flex: 1 0 auto;
    }
}
/*当最大宽度700是,隐藏右边栏*/
@media screen and (max-width: 700px) {
    .container > aside,
    header > a:not(:first-of-type):not(:last-of-type),
    footer {
    display: none;
    }
    /*登录按钮左边距350px*/
    header > a:last-of-type {
    margin-left: 350px;
    }
}

代码运行结果图:

flex 实现(m.php.cn)首页

<body>
  <!--顶部-->
  <header>
    <a href="" class="iconfont icon">&#xe65b;</a>
    <img src="static/images/logo.png" alt="" />
    <span class="iconfont icon">&#xe61f;</span>
  </header>
  <!--轮播图-->
  <div class="slider">
    <img src="static/images/slider.png" alt="" />
  </div>
  <!--主导航区-->
  <nav>
    <div>
      <a href=""><img src="static/images/nav_1.png" alt="" /></a>
      <a href="">HTML/CSS</a>
    </div>
    <div>
      <a href=""><img src="static/images/nav_2.png" alt="" /></a>
      <a href="">JavaScript</a>
    </div>
    <div>
      <a href=""><img src="static/images/nav_3.png" alt="" /></a>
      <a href="">服务端</a>
    </div>
    <div>
      <a href=""><img src="static/images/nav_3.png" alt="" /></a>
      <a href="">数据库</a>
    </div>
    <div>
      <a href=""><img src="static/images/nav_5.png" alt="" /></a>
      <a href="">移动端</a>
    </div>
    <div>
      <a href=""><img src="static/images/nav_6.png" alt="" /></a>
      <a href="">手册</a>
    </div>
    <div>
      <a href=""><img src="static/images/nav_7.png" alt="" /></a>
      <a href="">工具</a>
    </div>
    <div>
      <a href=""><img src="static/images/nav_8.png" alt="" /></a>
      <a href="">直播</a>
    </div>
  </nav>
  <!--推荐课程-->
  <div class="box recommend">
    <h3 class="title">推荐课程</h3>
    <div class="course_box">
      <div class="box_left">
        <img src="static/images/course_1.jpg" alt="" />
      </div>
      <div class="box_right">
        <img src="static/images/course_2.jpg" alt="" />
      </div>
    </div>
    <div class="course_inline">
      <a href=""><img src="static/images/course_3.jpg" alt="" /></a>
      <div class="course_intro">
        <h2>
          <a href="">CI框架30分钟极速入门</a>
        </h2>
        <p>
          <span class="tag">中级</span>
          <span>161651次播放</span>
        </p>
      </div>
    </div>
    <div class="course_inline">
      <a href=""><img src="static/images/course_4.jpg" alt="" /></a>
      <div class="course_intro">
        <h2>
          <a href="">2018前端入门_HTML5</a>
        </h2>
        <p>
          <span class="tag">初级</span>
          <span>161651次播放</span>
        </p>
      </div>
    </div>
  </div>
  <!--最近更新-->
  <div class="box update">
    <h3 class="title">最近更新</h3>
    <div class="update_list">
      <a href=""><img src="static/images/u_1.png" alt="" /></a>
      <div class="update_intro">
        <h2><a href="">《我的十年撸码生涯》公益直播课</a></h2>
        <p>主题：《十年撸码生涯：聊聊没羞没臊的工作...</p>
        <p><span class="tag">初级</span><span>1616次播放</span></p>
      </div>
    </div>
    <div class="update_list">
      <a href=""><img src="static/images/u_2.png" alt="" /></a>
      <div class="update_intro">
        <h2><a href="">2天速成VueJS免费公益直播课</a></h2>
        <p>php中文网免费公益直播课：两天四个小时Vue...</p>
        <p><span class="tag">初级</span><span>1616次播放</span></p>
      </div>
    </div>
    <div class="update_list">
      <a href=""><img src="static/images/u_3.png" alt="" /></a>
      <div class="update_intro">
        <h2><a href="">PHP代码整洁之道</a></h2>
        <p>本课程参考自 Robert C. Martin的Clean Code 书...</p>
        <p><span class="tag">中级</span><span>1616次播放</span></p>
      </div>
    </div>
    <div class="update_list">
      <a href=""><img src="static/images/u_4.png" alt="" /></a>
      <div class="update_intro">
        <h2><a href="">前端课程（五郞八卦棍系列）第...</a></h2>
        <p>本视频课程是Web开发的基础课程, 主要讲解H...</p>
        <p><span class="tag">初级</span><span>1616次播放</span></p>
      </div>
    </div>
    <div class="update_list">
      <a href=""><img src="static/images/u_5.png" alt="" /></a>
      <div class="update_intro">
        <h2><a href="">小皮面板使用视频教程</a></h2>
        <p>小皮面板（phpstudy-linux面板 ）针对Linux服...</p>
        <p><span class="tag">初级</span><span>1616次播放</span></p>
      </div>
    </div>
    <div class="update_list">
      <a href=""><img src="static/images/u_6.png" alt="" /></a>
      <div class="update_intro">
        <h2><a href="">从零进入C语言</a></h2>
        <p>本课程带你从零进入C语言，课程内容包括Linux...</p>
        <p><span class="tag">初级</span><span>1616次播放</span></p>
      </div>
    </div>
  </div>
  <!--最新文章-->
  <article class="box">
    <h3 class="title">最新文章</h3>
    <div class="article_list">
      <div class="article_left">
        <h2><a href="">php mysql 并发解决方案</a></h2>
        <span>发布时间：2020-08-12</span>
      </div>
      <div class="article_right">
        <a href=""><img src="static/images/a_1.jpg" alt="" /></a>
      </div>
    </div>
    <div class="article_list">
      <div class="article_left">
        <h2><a href="">微信号被投诉了能查到是谁投诉的吗</a></h2>
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      <div class="article_right">
        <a href=""><img src="static/images/a_2.jpg" alt="" /></a>
      </div>
    </div>
    <div class="article_list">
      <div class="article_left">
        <h2><a href="">php如何使用正则替换img src</a></h2>
        <span>发布时间：2020-08-12</span>
      </div>
      <div class="article_right">
        <a href=""><img src="static/images/a_1.jpg" alt="" /></a>
      </div>
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    <div class="article_list">
      <div class="article_left">
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        <span>发布时间：2020-08-12</span>
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        <span>发布时间：2020-08-12</span>
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      </div>
    </div>
    <div class="more"><a href="">更多内容</a></div>
  </article>
  <!--最新博文-->
  <div class="box blog">
    <h3 class="title">最新博文</h3>
    <div class="blog_list">
      <a href="">
        <h2>querylist采集</h2>
        <span>2020-08-10</span>
      </a>
    </div>
    <div class="blog_list">
      <a href="">
        <h2>酱茄社区论坛商城小程序pro更新与WordPress小程...</h2>
        <span>2020-08-10</span>
      </a>
    </div>
    <div class="blog_list">
      <a href="">
        <h2>showdoc 自动生成API文档</h2>
        <span>2020-08-10</span>
      </a>
    </div>
    <div class="blog_list">
      <a href="">
        <h2>私有版 showdoc 文档管理工具</h2>
        <span>2020-08-10</span>
      </a>
    </div>
    <div class="blog_list">
      <a href="">
        <h2>Windows服务器搭建网站步骤 iis配置网站 举栗子...</h2>
        <span>2020-08-10</span>
      </a>
    </div>
    <div class="more"><a href="">更多内容</a></div>
  </div>
  <!--最新问答-->
  <div class="box question">
    <h3 class="title">最新问答</h3>
    <div class="question_list">
      <a href="">
        <h2>函数与结构体</h2>
        <span>2020-08-12</span>
      </a>
    </div>
    <div class="question_list">
      <a href="">
        <h2>我把laravel里面的东西拷贝到其他盘了，然后在...</h2>
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    </div>
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      <a href="">
        <h2>在我的Terminal中好像不提示输入的信息，但是...</h2>
        <span>2020-08-12</span>
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    <div class="question_list">
      <a href="">
        <h2>我也是使用镜像安装的，但不是按照咱们这样在...</h2>
        <span>2020-08-12</span>
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    <div class="question_list">
      <a href="">
        <h2>想自己做网站有会做的师傅吗薪水丰厚</h2>
        <span>2020-08-12</span>
      </a>
    </div>
    <div class="more"><a href="">更多内容</a></div>
  </div>
  <!--底部-->
  <footer>
    <a href="" class="active"
      ><span class="iconfont">&#xe60c;</span><span>首页</span></a
    >
    <a href=""><span class="iconfont">&#xe60a;</span><span>视频</span></a>
    <a href=""><span class="iconfont">&#xe64b;</span><span>社区</span></a>
    <a href=""><span class="iconfont">&#xe65b;</span><span>我的</span></a>
  </footer>
</body>

CSS 代码如下

* {
    margin: 0;
    padding: 0;
    /*box-sizing: border-box;*/
}
a {
    text-decoration: none;
    color: #666;
}
a:hover {
    color: black;
}
html {
    /*调整宽高为视口宽高*/
    width: 100vw;
    height: 100vh;
    font-size: 14px;
    color: #666;
}
body {
    display: flex;
    /*整个主轴垂直*/
    flex-flow: column nowrap;
    min-width: 360px;
    background-color: #edeff0;
}
body > header {
    display: flex;
    width: 95vw;
    background-color: #333;
    color: #fff;
    /*水平两端对齐*/
    justify-content: space-between;
    height: 42px;
    /*交叉轴方向居中*/
    align-items: center;
    /*左右15px边距*/
    padding: 0 15px;
    position: fixed;
}
/*给字体图标加个字号*/
header > .icon {
    font-size: 26px;
    color: #fff;
}
body > .slider {
    height: 200px;
    margin-top: 42px;
}
/*轮播图宽度占据整个视宽*/
.slider > img {
    width: 100%;
}
/*导航*/
nav {
    height: 200px;
    background-color: #fff;
    display: flex;
    flex-flow: row wrap;
    /*分散对齐*/
    align-content: space-around;
    /*上下边距10px */
    margin-bottom: 10px;
}
nav > div {
    /*转成flex容器*/
    display: flex;
    /*给一个25vw的宽度*/
    flex: 0 1 25vw;
    flex-flow: column nowrap;
    align-items: center;
}
/*图片宽度改为原来大小的50%*/
nav > div img {
    width: 50%;
}
/*图片居中对齐*/
nav > div > a:first-of-type {
    text-align: center;
}
/*通用标题*/
.title {
    margin-top: 20px;
    margin-bottom: 10px;
    color: #888;
    font-size: 18px;
    font-weight: bold;
}
/*两边内边距*/
.box {
    padding: 0 10px;
}
/*推荐课程*/
.recommend > .course_box {
    display: flex;
    /*分散对齐*/
    justify-content: space-around;
}
.course_box img {
    width: 47vw;
}
.course_inline {
    background-color: #fff;
    display: flex;
    padding: 10px;
    margin: 10px 0;
}
.course_inline img {
    width: 40vw;
}
.course_intro {
    display: flex;
    flex-flow: column nowrap;
    padding: 0 10px;
}
.course_intro > h2 {
    font: 16px Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial,
    sans-serif;
    font-weight: 400;
    color: #777;
}
.course_intro > p {
    margin-top: 10px;
}
/*标签*/
.tag {
    background-color: #333;
    /*圆角*/
    border-radius: 8px;
    color: #fff;
    font-size: 12px;
    padding: 3px;
}
/*最近更新*/
.update_list {
    background-color: #fff;
    display: flex;
    padding: 10px;
    margin: 20px 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.update_list img {
    width: 40vw;
}
.update_intro {
    display: flex;
    flex-flow: column nowrap;
    padding: 0 10px;
    justify-content: space-around;
}
.update_list > .update_intro > h2 {
    font-weight: 400;
    font-size: 17px;
}
.update_intro > p:first-of-type {
    font-size: 11px;
}
.update_intro > p:last-of-type {
    display: flex;
    justify-content: space-between;
}
/*最新文章*/
article {
    display: flex;
    flex-flow: column nowrap;
}
article > .article_list {
    background-color: #fff;
    display: flex;
    padding: 10px;
    margin: 8px 0;
    justify-content: space-between;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
article > .article_list > .article_left {
    display: flex;
    flex-flow: column nowrap;
}
.article_list > .article_left h2 {
    font-size: 14px;
    font-weight: bold;
}
.article_list > .article_left span {
    margin-top: 10px;
}
article > .article_list > .article_right {
    width: 30vw;
}
article > .article_list > .article_right img {
    width: 100%;
}
/*更多*/
.more > a {
    display: block;
    background-color: #fff;
    margin: 5px 0;
    padding: 5px 0;
    text-align: center;
}
/*最新博文,最新问答*/
.blog > .blog_list,
.question > .question_list {
    background-color: #fff;
    margin: 12px 0;
    padding: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.blog > .blog_list > a,
.question > .question_list > a {
    display: flex;
    justify-content: space-between;
}
.blog > .blog_list > a > h2,
.question > .question_list > a > h2 {
    font-size: 14px;
    font-weight: bold;
    color: #777;
}
.blog > .blog_list > a > span,
.question > .question_list > a > span {
    font-weight: 100;
}
.question .more {
    margin-bottom: 65px;
}
/*页脚*/
footer {
    height: 55px;
    background-color: #efefef;
    width: 100vw;
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-top: 1px solid #ccc;
    position: fixed;
    bottom: 0;
}
footer > a {
    display: flex;
    flex-flow: column nowrap;
    align-items: center;
}
/*选中*/
.active {
    color: red;
}

代码运行图如下:

2.Grid 网格布局

Grid 网格布局是一种将网页网格化，并实现布局的一种方式

使用自定义 12 栅格布局实现百度首页
html 代码如下:

<body>
  <div class="container">
    <!-- 页眉 -->
    <div class="row">
      <div class="item col-12 header">
        <nav>
          <a href="">新闻</a>
          <a href="">hao123</a>
          <a href="">地图</a>
          <a href="">视频</a>
          <a href="">贴吧</a>
          <a href="">学术</a>
          <a href="">更多</a>
        </nav>
        <nav>
          <a href="">高考加油</a>
          <a href="">天气</a>
          <a href="">登录</a>
        </nav>
      </div>
    </div>
    <!-- 主体 -->
    <div class="row">
      <div class="item col-2 left"></div>
      <div class="item col-8 main">
        <div class="baidu_img">
          <a href=""><img src="static/image/baidu.png" alt="" /></a>
        </div>
        <div class="input"><input type="text" /><button>百度一下</button></div>
        <div class="box">
          <div class="menu">
            <a class="active" href="">我的关注</a>
            <a href="">推荐</a>
            <a href="">导航</a>
          </div>
          <div class="content">
            <div class="head_line">
              <p>我的导航</p>
              <div>
                <div class="cbox">
                  <input type="checkbox" name="" id="show" /><label for="show"
                    >分类显示</label
                  >
                </div>
                <a href="">编辑</a>
              </div>
            </div>
            <div class="list">
              <div class="nav">
                <a href=""><img src="static/image/c_1.png" alt="" /></a>
                <a href="">百度贴吧</a>
              </div>
              <div class="nav">
                <a href=""><img src="static/image/c_2.png" alt="" /></a>
                <a href="">淘宝网</a>
              </div>
              <div class="nav">
                <a href=""><img src="static/image/c_3.png" alt="" /></a>
                <a href="">新浪微博</a>
              </div>
              <div class="nav">
                <a href=""><img src="static/image/c_4.png" alt="" /></a>
                <a href="">新闻</a>
              </div>
              <div class="nav">
                <span>+</span>
                <a href="">添加导航</a>
              </div>
            </div>
          </div>
          <div class="diy">
            <a href=""><span>+</span></a>
            <a href="">自定义</a>
          </div>
        </div>
      </div>
      <div class="item col-2 right"></div>
    </div>
    <!-- 页脚 -->
    <div class="row">
      <div class="item col-12 footer">
        <nav>
          <a href="">设为首页</a>
          <a href="">关于百度</a>
          <a href="">About</a>
          <a href="">Baidu</a>
          <a href="">百度营销</a>
          <a href="">使用百度前必读</a>
          <a href="">意见反馈</a>
          <a href="">帮助中心</a>
        </nav>
      </div>
    </div>
  </div>
</body>

CSS 代码如下

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
a {
  text-decoration: none;
  color: #555;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
  /* 视口大小 */
  min-height: 100vh;
  min-width: 100vw;
}
.container {
  width: 1000px;
  display: grid;
  gap: 5px;
}
.container > .row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  min-height: 50px;
  gap: 5px;
  grid-template-areas: "";
}
.container > .row > .item {
  padding: 10px;
}
.col-1 {
  grid-column: span 1;
}
.col-2 {
  grid-column: span 2;
}
.col-3 {
  grid-column: span 3;
}
.col-4 {
  grid-column: span 4;
}
.col-5 {
  grid-column: span 5;
}
.col-6 {
  grid-column: span 6;
}
.col-7 {
  grid-column: span 7;
}
.col-8 {
  grid-column: span 8;
}
.col-9 {
  grid-column: span 9;
}
.col-10 {
  grid-column: span 10;
}
.col-11 {
  grid-column: span 11;
}
.col-12 {
  grid-column: span 12;
}
/* 页眉 */
.header {
  display: grid;
  grid-template-columns: 3fr 1fr;
  grid-template-rows: 1fr;
  align-items: center;
}
/* 导航 */
nav {
  background-color: #fff;
}
nav > a {
  padding: 10px;
}
nav > a:hover {
  color: blue;
}
/* 主体 */
.main {
  height: 600px;
  display: grid;
  grid-template-rows: 1fr 1fr 3fr;
  place-items: center;
}
/* LOGO */
.baidu_img {
  display: grid;
}
.baidu_img img {
  width: 50%;
}
.baidu_img a {
  text-align: center;
}
/* 输入框 */
.input > input {
  width: 300px;
  height: 44px;
  border: 2px solid #c4c7ce;
  border-radius: 5px;
  background-color: #fff;
  padding: 0 10px;
}
.input > button {
  background-color: #4e6ef2;
  border: 0;
  border-radius: 0 8px 8px 0;
  color: #fff;
  height: 44px;
  width: 108px;
  margin-left: -3px;
}
/* 主要内容区 */
.box {
  width: 600px;
  height: 200px;
  display: grid;
  grid-template-rows: 1fr 6fr;
}
/* 内容区菜单 */
.box > .menu {
  display: grid;
  grid-auto-flow: column;
  place-content: center start;
}
.menu > a {
  font-size: 14px;
  padding: 5px 10px;
  color: #777;
}
.menu > a:hover {
  color: #000;
}
/* 选中状态 */
.active {
  border-bottom: 2px solid #4e6ef2;
}
/* 内容区主体 */
.content {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 2px 3px 2px #ddd;
}
/* 主体头部 */
.head_line {
  display: grid;
  grid-auto-flow: column;
  grid-template-columns: 5fr 2fr;
  padding: 10px 15px;
}
.head_line > p,
.cbox label,
.head_line > div > a {
  font-size: 14px;
  font-weight: 100;
  color: #777;
}
.head_line > div {
  display: grid;
  grid-auto-flow: column;
  justify-content: space-around;
}
/* 内容区内容 */
.list {
  padding: 15px;
  display: grid;
  grid-auto-flow: column;
  grid-template-columns: repeat(5, 1fr);
  place-items: center;
}
.list > .nav {
  display: flex;
  flex-flow: column;
  align-items: center;
}
.nav img {
  width: 25%;
}
.nav a {
  font-size: 14px;
  text-align: center;
}
.nav a:hover {
  color: #4e6ef2;
}
/* 自定义 */
.diy {
  display: grid;
  place-content: start;
  margin-top: 10px;
}
.diy {
  display: flex;
  justify-content: start;
  align-items: center;
}
.diy > a:hover {
  color: #4e6ef2;
}
.diy > a > span {
  padding: 5px;
  font-weight: bold;
  font-size: 16px;
}
/* 页脚 */
.footer {
  display: grid;
  align-items: center;
}
.footer > nav a {
  font-size: 12px;
  color: #777;
}
.footer > nav a:hover {
  color: #4e6ef2;
}

代码运行如图

Grid 布局实现响应式网络相册

html 代码如下

<body>
  <h1>动物头像</h1>
  <div class="container">
    <div class="item">
      <a href=""><img src="static/image/1.jpg" alt="" /></a>
      <a href="">头像1</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/2.jpg" alt="" /></a>
      <a href="">头像2</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/3.jpg" alt="" /></a>
      <a href="">头像3</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/4.jpg" alt="" /></a>
      <a href="">头像4</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/5.jpg" alt="" /></a>
      <a href="">头像5</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/6.jpg" alt="" /></a>
      <a href="">头像6</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/7.jpg" alt="" /></a>
      <a href="">头像7</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/8.jpg" alt="" /></a>
      <a href="">头像8</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/9.jpg" alt="" /></a>
      <a href="">头像9</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/10.jpg" alt="" /></a>
      <a href="">头像10</a>
    </div>
    <div class="item">
      <a href=""><img src="static/image/11.jpg" alt="" /></a>
      <a href="">头像11</a>
    </div>
  </div>
</body>

CSS 代码如下

/* 初始化 */
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
a {
    text-decoration: none;
    color: #555;
}
body {
    background-color: lightseagreen;
}
/* 页头标题 */
h1 {
    color: #fff;
    text-align: center;
    font-size: 2.5rem;
    font-weight: normal;
    text-shadow: 2px 2px 2px #555;
    margin-top: 20px;
}
/* 主体 */
.container {
    width: 100vw;
    height: 100vh;
    padding: 50px;
    display: grid;
    /* 自动填充简介实现媒体查询 */
    grid-template-columns: repeat(auto-fill, 180px);
    grid-template-rows: repeat(auto-fill, 200px);
    /* 垂直,水平平均对齐 */
    place-content: space-evenly;
    /* 间隔 */
    gap: 10px;
}
.container img {
    width: 100%;
    /* 图片居中 */
    text-align: center;
}
.container > .item {
    /* 圆角 */
    border-radius: 10px;
    padding: 10px;
    background-color: #eee;
    /* 细节调整 */
    display: flex;
    flex-flow: column nowrap;
    align-items: center;
    justify-content: center;
}
/* 鼠标覆盖样式 */
.container > .item:hover {
    box-shadow: 0 0 10px #666;
    width: calc(100% * 1.02);
    background-color: lightpink;
}

代码运行如图

批改老师：

天蓬老师

批改状态：合格

老师批语：非常棒, 推荐给大家了

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涅槃重生 2020-08-14 11:46:06

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