.start-class-container{width:100%;height:100%}.start-class-container #_ppt{height:100%;position:relative}.start-class-container .lianxi-item{display:flex;flex-direction:column;align-items:center;justify-content:center}.start-class-container .lianxi-item .lianxi{width:.130208rem;height:.130208rem}.start-class-container .lianxi-item p{font-size:.09375rem;color:#fff}