.CourseDetailBridge{position:relative}.CourseDetailBridge:before{content:"";position:absolute;left:var(--bridge-x, 50%);top:-13px;transform:translate(-50%) rotate(45deg);width:24px;height:24px;background:#fff;border-top:1px solid #c8d1e1;border-left:1px solid #c8d1e1}