.topic-dynamic-item:not(:last-child)::after{content:"\20";position:absolute;bottom:0;left:1.6rem;right:1.6rem;height:1px;background-color:#e8e8f3;-webkit-transform:scaleY(0.5);transform:scaleY(0.5)}
.topic-column-box .swiper.topic-column-banner{padding:1.6rem 0}
.topic-column-box .swiper .topic-column-banner-item{width:12rem;height:12rem;box-shadow:0 2px 4px 0 #f4f7ff}
.topic-column-box .swiper .topic-column-banner-item:first-child{margin-left:1.6rem}
.topic-column-box .swiper .topic-column-banner-item:last-child{margin-right:1.6rem}
.topic-column-box .swiper .default-topic-column-img{background:url(https://file.jingpt.com/wap/images/explain-default-830.png) no-repeat center;background-size:cover}