微信小程序开发背景图显示功能

<view class='set-background'>
  <image class='background-image' src='{{item.countryPic}}'></image>
  <view class='background-content'>
    <view class="set-background-avatar" background-size="cover">
      <image class="post-specific-image" src="{{item.picture}}"></image>
    </view>
  </view>
</view>

.set-background {
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 150px;
}
.set-background-avatar {
  width: 220px;
  height: 150px;
}
.background-content {
  position: absolute;
  z-index: 1;
}
.background-image {
  width: 225px;
  height: 150px;
  opacity: 0.8;
}
.post-specific-image {
  width: 215px;
  height: 150px;
  vertical-align: middle;
}