.conference{position:relative}.conference-body{width:100%;height:calc(100vh - 360px);background:#222;oveflow:hidden}.conference-btn-content{margin-top:60px;margin-bottom:60px;width:100%;display:flex;align-items:center;justify-content:center;flex-direction:column}.conference-btn-play{width:80px}.conference-btn-play:hover{cursor:pointer}.conference-btn-text{text-align:center}