@media (max-width:768px){#about .videoPlayerBox{height:auto;width:100%;margin:10px auto 0}.timeline-item{-webkit-flex:0 0 -webkit-calc(33.333% - 20px);-moz-box-flex:0;-ms-flex:0 0 calc(33.333% - 20px);flex:0 0 calc(33.333% - 20px)}.timeline-popup{width:200px}}