combination/miniprogram/packageExtend/pages/adapt/horizontalexpansion/horizontalexpansion.wxml

<view class="container page" data-weui-theme="{{theme}}">
  <view>
      <swiper class="item-swiper">
         <swiper-item>
            <view class="item item-A">A</view>
          </swiper-item>
          <swiper-item>
            <view class="item item-B">B</view>
          </swiper-item>
          <swiper-item>
            <view class="{{theme === 'dark' ? 'item dark-C' : 'item'}}">C</view>
          </swiper-item>
      </swiper>
  </view>
  <view>
    <mp-row>
      <mp-col xs="{{0}}" span="{{8}}">
        <view>
          <view class="item item-A">
            A
          </view>
        </view>
      </mp-col>
      <mp-col xs="{{0}}" span="{{8}}">
        <view>
          <view class="item item-B">
            B
          </view>
        </view>
      </mp-col>
      <mp-col xs="{{0}}" span="{{8}}">
        <view>
          <view class="{{theme === 'dark' ? 'item dark-C' : 'item item-C'}}">
            C
          </view>
        </view>
      </mp-col>
    </mp-row>
  </view>
</view>