<swiper class="swiper-block" previous-margin="70rpx" next-margin="70rpx" current="0" autoplay="true" bindchange="swiperChange" circular="true">
   <block wx:for="{{totalData.banners}}" wx:index="{{index}}" wx:key="bannerList">
    <swiper-item class="swiper-item">
     <image mode="aspectFill" src="{{item.cover}}" class="slide-image {{swiperIndex == index ? 'active' : ''}}" />  <br>     </swiper-item>
   </block>
  </swiper>

.swiper-block {
 height: 320rpx;
 width: 100%;
}
  
.swiper-item {
 display: flex;
 flex-direction: column;
 justify-content: center;
 align-items: center;
 overflow: unset;
 text-align: center;
}
  
.slide-image {
 height: 230rpx;
 width: 526rpx;
 border-radius: 10rpx;
 box-shadow: 0px 3px 10px 0px rgba(51, 51, 51, 0.3);
 margin: 0 rpx 30rpx;
 z-index: 1;
}
  
.active {
 transform: scale(1.21);
 transition: all 0.2s ease-in 0s;
 z-index: 20;
}

swiperChange(e) {
 const that = this;
 that.setData({
  swiperIndex: e.detail.current,
 })
},