微信小程序 文章加载占位样式 CSS Placeholder

类似豆瓣 APP 动画闪烁效果

WXML：

<view class="text-loading">
  <view class='pic-loading-line'></view>
  <view class='text-loading-line-first'>
    <view class='text-loading-line'></view>
    <view class='text-loading-line'></view>
    <view class='text-loading-line'></view>
  </view>
  <view class='text-loading-line-second'>
    <view class='text-loading-line'></view>
    <view class='text-loading-line'></view>
    <view class='text-loading-line'></view>
  </view>
</view>

WXSS：

.text-loading {
  width: 90%;
  margin:50rpx;
  /* border:1rpx solid #ccc; */
}

.text-loading .pic-loading-line {
  display: inline-block;
  width: 130rpx;
  height: 130rpx;
  margin-right: 20rpx;
  margin-bottom: 20rpx;
  animation: pulse 1s infinite ease-in-out;
}

.text-loading .text-loading-line-first {
  display: inline-block;
  width: 70%;
  height: 150rpx;
}

.text-loading .text-loading-line-second {
  display: inline-block;
  width: 100%;
  height: 150rpx;
}

.text-loading-line {
  height: 30rpx;
  margin-bottom: 20rpx;  
  width: 100%;
  animation: pulse 1s infinite ease-in-out;
}

.text-loading-line:nth-child(1) {
  width: 100%;
}

.text-loading-line:nth-child(2) {
  width: 90%;
}

.text-loading-line:nth-child(3) {
  width: 50%;
}

@keyframes pulse {
  0% {
    background-color: rgba(165, 165, 165, 0.1);
  }

  50% {
    background-color: rgba(165, 165, 165, 0.3);
  }

  100% {
    background-color: rgba(165, 165, 165, 0.1);
  }
}