 <div class="avatar"></div>
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    <div class="box">
      <h4>头像综合运用</h4>
      <div class="vertical">
        <div class="card">
          <div class="avatar online notice">
            <img src="https://images.unsplash.com/photo-1547721064-da6cfb341d50?w=200" alt="">
            <div class="reddot" data-count="3"></div>
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          <div class="content">
            <p class="title">叉烧包小笼包奶黄包</p>
            <p>疯狂打码中</p>
         