程序实现

<div class="header">
      <div class="search">
        <div class="keys">
          <span class="iconfont icon-sousuo"></span>
          <span>搜你想看的</span>
        </div>
        <div class="publish">
          <span class="iconfont icon-fabu"></span>
          <span class="text">发布</span>
        </div>
      </div>
      <div class="navs">
        <a href="">关注</a>
        <a href="" class="active">推荐</a>
        <a href="">探索</a>
        <a href="">发现</a>
        <a href="">防疫</a>
        <a href="">国际</a>
      </div>
    </div>
    <!-- main -->
    <div class="main">
      <!-- 置顶 -->
      <div class="top-list">
        <a class="top" href="">
          <div class="title">习近平同俄罗斯总统普京举行会谈</div>
          <div class="comment">
            <span class="highlight">置顶</span>
            <span class="focus">已关注</span>
            <span>·</span>
            <span class="source">央视新闻</span>
            <span class="follow">918评论</span>
          </div>
        </a>
      </div>
      <div class="top-list">
        <a class="top" href="">
          <div class="title">
            习近平同俄罗斯总统普京举行会谈，会见总理米舒斯金
          </div>
          <div class="comment">
            <span class="highlight">置顶</span>
            <span class="focus">已关注</span>
            <span>·</span>
            <span class="source">央视新闻</span>
            <span class="follow">918评论</span>
          </div>
        </a>
      </div>
      <!-- 文字+图片 -->
      <div class="miximg-list">
        <a href="" class="miximg">
          <div class="content">
            <div class="title">
              !总台独家专访｜美海军陆战队前队员：“北溪”被炸无限期损害欧洲工业竞争力
            </div>
            <div class="comment">
              <span class="source">国际在线</span>
              <span class="follow">3评论</span>
              <span class="time">1小时前</span>
            </div>
          </div>
          <div class="imgs">
            <img
              src="https://p3-sign.toutiaoimg.com/tos-cn-i-tjoges91tu/TZ6HuHD8suI5cx~noop.image?x-expires=1994821336&x-signature=946ahttTmcXqDBm1GQ6Jn6MmvnU%3D"
              alt=""
            />
          </div>
        </a>
      </div>
      <div class="miximg-lists">
        <a href="" class="miximg">
          <div class="content">
            <div class="title">
              总台独家专访｜美海军陆战队前队员：“北溪”被炸无限期损害欧洲工业竞争力
            </div>
            <div class="comment">
              <span class="source">国际在线</span>
              <span class="follow">3评论</span>
              <span class="time">1小时前</span>
            </div>
          </div>
          <img
            src="https://p3-sign.toutiaoimg.com/tos-cn-i-tjoges91tu/TZ6HuHD8suI5cx~noop.image?x-expires=1994821336&x-signature=946ahttTmcXqDBm1GQ6Jn6MmvnU%3D"
            alt=""
          />
        </a>
      </div>
      <!-- 文字+视频 -->
      <div class="mixvideo">
        <a class="title" href="">夜线约见：高校开设“考公”培训班？</a>
        <video src="static/images/Qi8_eweH.mp4" controls></video>
        <div class="comment">
          <span class="source">看看新闻</span>
          <span class="follow">3评论</span>
          <span class="time">1小时前</span>
        </div>
      </div>
      <div class="mixvideo">
        <a class="title" href=""
          >聊天记录曝光！“女子杀夫藏尸案”亲人曾给被害人发信息怀疑对方不是本人</a
        >
        <video
          src="https://edge.ivideo.sina.com.cn/50328897401.mp4?KID=sina,viask&Expires=1679587200&ssig=oZGhgzRi0w&reqid="
          controls
        ></video>
        <div class="comment">
          <span class="source">新浪新闻</span>
          <span class="follow">15评论</span>
          <span class="time">1天前</span>
        </div>
      </div>
    </div>
    <!-- footer -->
    <div class="foot">
      <a class="item active" href="">
        <span class="iconfont icon-wenjianliebiao2"></span>
        <span class="icontext">首页</span>
      </a>
      <a class="item" href="">
        <span class="iconfont icon-24gl-play"></span>
        <span class="icontext">视频</span>
      </a>
      <a class="item" href="">
        <span class="iconfont icon-dianshi"></span>
        <span class="icontext">放映厅</span>
      </a>
      <a class="item" href="">
        <span class="iconfont icon-wodewo"></span>
        <span class="icontext">我的</span>
      </a>
    </div>

/* header css */
.header {
  position: fixed;
  /* initial css设置了padding，如下设置可以覆盖掉padding，将背景全覆盖 */
  left: 0;
  top: 0;
  right: 0;
  background-color: red;
  z-index: 999;
}
.header .search {
  /* display: flex;
  place-content: space-between; */
  /* 采用grid布局，可以设置两个单元格宽度 */
  display: grid;
  grid-template-columns: 1fr 0.5rem;
  padding: 0.08rem;
}
.header .search .keys {
  background-color: white;
  color: lightgray;
  border-radius: 2rem;
  padding: 0.1rem 0.2rem;
}
.header .search .publish {
  display: grid;
  place-items: center;
  color: white;
}
.header .navs {
  background-color: white;
  display: flex;
  place-content: space-around;
  padding: 0.05rem 0;
  border-bottom: 0.01rem solid lightgray;
}
.header .navs a {
  position: relative;
  color: gray;
}
.header .navs a.active::after {
  position: absolute;
  content: "";
  /* 用bottom而不是margin-top,bottom为a的相对定位底部，left为a的相对定位左边 */
  bottom: -0.04rem;
  left: 0;
  width: 0.32rem;
  height: 0.03rem;
  background-color: red;
}
/* main css */
.main {
  position: absolute;
  /* left: 0;
  right: 0; */
  top: 1rem;
  padding-bottom: 0.5rem;
  background-color: white;
  /* height: 10rem; */
}
.main .comment {
  /* 下边距 */
  display: flex;
  font-size: small;
  color: lightgray;
  gap: 0.1rem;
  /* color: aqua; */
}
/* 1. 置顶 css */
.main .top-list {
  display: block;
  margin-top: 0.1rem;
}
.main .top-list .top .comment .highlight {
  color: red;
}
.main .miximg-list,
.main .miximg-lists {
  margin-top: 0.1rem;
}
/* 1. 文字+图片flex css */
.main .miximg-list .miximg {
  /* 采用grid布局，实现宽度定制 */
  /* display: grid;
  grid-template-columns: 1fr 1.4rem; */
  display: flex;
  flex-flow: row nowrap;
  /* display: block后，padding设置有效; */
  padding: 0.03rem 0.1rem 0 0;
  gap: 0.03rem;
}
.main .miximg-list .miximg .content {
  /* padding-right: 0.1rem; */
  flex: 100;
}
.main .miximg-list .miximg .imgs {
  /* display: block; */
  /* padding-right: 0.1rem; */
  flex: 1.2rem;
  place-self: center;
}
/* 1. 文字+图片grid css */
.main .miximg-lists .miximg {
  /* 采用grid布局，实现宽度定制 */
  display: grid;
  grid-template-columns: 1fr 1.2rem;
  padding: 0.03rem 0.1rem 0 0;
  gap: 0.03rem;
}
.main .miximg-lists .miximg a img {
  padding-right: 0.1rem;
}
.main .mixvideo {
  margin-top: 0.1rem;
  display: block;
  gap: 0.05rem;
  padding: 0 0.1rem 0 0;
}
/* .main .mixvideo {
  display: block;
  gap: 0.1rem;
} */
/* footer css */
.foot {
  /* 固定页脚 */
  position: fixed;
  /* 固定在底部，左右齐边 */
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  place-content: space-around;
  background-color: rgb(253, 252, 252);
  z-index: 888;
}
.foot .item {
  color: gray;
}
.foot .item {
  display: grid;
  /* font-size: normal; */
  /* grid->place-items: 单于格水平对齐; */
  place-items: center;
  /* color: red; */
}
.foot .item .iconfont {
  font-size: 0.2rem;
}
.foot .item .icontext {
  font-size: small;
}
/* 有两个class属性的项目，css中两个class name连写 */
.foot .item.active {
  color: red;
}

实现效果

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开学第一课

2023-03-10 16:14:27