.story_bg1{z-index:2;position:relative;background:#f9efff;box-shadow:0 10px 15px rgba(0,0,0,.16)}.story_bg1 .box{padding-top:80px}.story_bg2{background:#ffeff0;box-shadow:0 10px 15px rgba(0,0,0,.16)}.story_bg2,.story_bg3{z-index:1;position:relative}.story_bg3{background:#f9efff}.story .story-box{width:384px;border-radius:6px;margin-bottom:30px}.story .story-box .story-poster{width:384px;height:203px;overflow:hidden}.banner-nav{position:relative}.banner-nav .nav{width:100%;display:flex;justify-content:space-around;z-index:3;bottom:-30px;position:absolute;left:50%;transform:translateX(-50%)}.banner-nav .nav .tab{width:120px;height:60px;background:#fff;box-shadow:4px 4px 15px rgba(0,0,0,.16);line-height:60px;text-align:center;color:#8700b7;border-radius:4px}