header元件的實現圖：

header元件的程式碼：

  html：

<template>
  <div class="header">
    <div class="content-wrapper">
      <div class="avatar">
        <img width="64" height="64" :src="sell.avatar"/>
      </div>
      <div class="content">
        <div class=
 
"title">
          <span class="brand"></span>
          <span class="name">{{sell.name}}</span>
        </div>
        <div class="description">
          {{sell.description}}/{{sell.deliveryTime}}分鐘送達
        </div>
        <div v-if="sell.supports" class=
 
"support"><!--顯示商家活動的第一個-->
          <span class="icon" :class="classMap[sell.supports[0].type]"></span>
          <span class="text">{{sell.supports[0].description}}</span>
        </div>
      </div>
      <div v-if="sell.supports" class="content-support" 
 
@click="showDetail"><!--顯示商家活動的個數-->
        <span>{{sell.supports.length}}個&nbsp;></span>
      </div>
    </div>
    <div class="bulletin-wrapper" @click="showDetail"><!--公告的部分-->
      <span class="bulletin-title"></span>
      <span class="bulletin-text">{{sell.bulletin}}</span>
      <span class="im">></span>
    </div>
    <div class="background"><!--背景的模糊層-->
      <img width="100%" height="100%" :src="sell.avatar"/>
    </div>
    <div class="detail" v-show="detailShow"><!--隱藏層-->
      <div class="detail-wrapper clearFix">
        <div class="detail-main">
          <h1 class="name">{{sell.name}}</h1>
          <div class="star-wrapper">
            <v-star :score="sell.score">{{sell.score}}</v-star><!--星級的元件-->
          </div>
          <div class="lineTitle">
            <div class="line"></div>
            <div class="lineText">優惠資訊</div>
            <div class="line"></div>
          </div>
          <ul v-if="sell.supports" class="detail-supports"><!--顯示商家活動-->
            <li class="support-item" v-for="(item,index) in sell.supports">
              <span class="icon" :class="classMap[sell.supports[index].type]"></span>
              <span class="text">{{sell.supports[index].description}}</span>
            </li>
          </ul>
          <div class="lineTitle">
            <div class="line"></div>
            <div class="lineText">商家公告</div>
            <div class="line"></div>
          </div>
          <div class="seller-bulletion">
            <p class="seller-text">{{sell.bulletin}}</p>
          </div>
        </div>
      </div>
      <div class="detail-close"><!--關閉按鈕-->
        <div @click="closeDetail">
          <Icon name="close"></Icon>
        </div>
      </div>
    </div>
  </div>
</template>

js：

<script>
  import star from '../star/star'
  import Icon from "vue2-svg-icon/Icon";

  export default {
    props: {
      sell: {
        type: Object
      }
    },
    data() {
      return {
        detailShow: false
      }
    },
    methods: {
      showDetail() {
        this.detailShow = true
      },
      closeDetail() {
        this.detailShow = false
      }
    },
    created() {
      this.classMap = ['decrease', 'discount', 'guarantee', 'invoice', 'special']
    },
    components: {
      "v-star": star,
      Icon
    }
  }
</script>

css：

<style scoped>

  .header {
    position: relative;
    color: #fff;
    background: rgba(7, 17, 27, 0.5);
  }

  .content-wrapper {
    position: relative;
    padding: 24px 16px 18px 24px;
    font-size: 0px;
  }

  .avatar {
    display: inline-block;
    vertical-align: top;
  }

  .content {
    font-size: 14px;
    display: inline-block;
    margin-left: 16px;
  }

  .brand {
    display: inline-block;
    vertical-align: top;
    width: 60px;
    height: 36px;
    background-image: url("[email protected]");
  }

  .name {
    display: inline-block;
    font-size: 25px;
    font-weight: bold;
    line-height: 32px;
  }

  .description {
    font-size: 20px;
    font-weight: 100;
    line-height: 20px;
    margin-top: 5px;
  }

  .support {
    margin-top: 5px;
  }

  .icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    margin-left: 4px;
    vertical-align: top;
  }

  .text {
    font-size: 18px;
  }

  .decrease {
    background-image: url("[email protected]");
  }

  .discount {
    background-image: url("[email protected]");
  }

  .guarantee {
    background-image: url("[email protected]");
  }

  .invoice {
    background-image: url("[email protected]");
  }

  .special {
    background-image: url("[email protected]");
  }

  .content-support {
    position: absolute;
    right: 12px;
    bottom: 18px;
    height: 24px;
    padding: 0 8px;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 14px;
    text-align: center;
    line-height: 24px;
    vertical-align: top;
  }

  .content-support > span {
    font-size: 18px;
  }

  .bulletin-wrapper {
    height: 38px;
    line-height: 38px;
    padding: 0 12px 0 12px;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    text-overflow: ellipsis;
    background-color: rgba(0, 0, 0, 0.2);
  }

  .bulletin-title {
    display: inline-block;
    vertical-align: top;
    height: 24px;
    width: 44px;
    background-image: url("[email protected]");
    margin-top: 8px;
  }

  .bulletin-text {
    vertical-align: top;
    text-align: center;
    font-size: 18px;
  }

  .im {
    position: absolute;
    right: 2px;
    top: 1px;
    font-size: 18px;
  }

  .background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    filter: blur(10px);
  }

  .detail {
    position: fixed;
    z-index: 100;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(7, 17, 27, 0.9);
  }

  .clearFix {
    display: inline-block;
  }

  .clearFix :after {
    display: block;
    content: ".";
    height: 0;
    line-height: 0;
    clear: both;
    visibility: hidden;
  }

  .detail-wrapper {
    width: 100%;
    min-height: 100%;
  }

  .detail-main {
    width: 100%;
    margin-top: 64px;
    padding-bottom: 64px;
  }

  .detail-main > .name {
    width: 100%;
    line-height: 28px;
    font-size: 28px;
    font-weight: 700;
    text-align: center;
  }

  .detail-close {
    position: relative;
    margin: -50px auto 0 auto;
    text-align: center;
    clear: both;
    width: 30px;
    height: 30px;
  }

  .star-wrapper {
    margin-top: 20px;
    text-align: center;
    padding: 2px 0;
  }

  .lineTitle {
    display: flex;
    width: 80%;
    margin: 30px auto;
  }

  .line {
    flex: 1;
    position: relative;
    top: -6px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  }

  .lineText {
    font-size: 20px;
    font-weight: 700;
    padding: 0 12px;
  }

  .detail-supports {
    width: 80%;
    margin: 0 auto;
  }

  .support-item {
    padding: 0 12px;
    margin-bottom: 12px;
    font-size: 0;
  }

  .support-item > .text {
    line-height: 16px;
    font-size: 16px;
  }

  .seller-bulletion {
    width: 80%;
    margin: 0 auto;
  }

  .seller-bulletion > .seller-text {
    text-indent: 2em;
    width: 100%;
    padding: 0 12px;
    line-height: 24px;
    font-size: 20px;
    font-weight: 200;
  }
</style>