.videoplayer{position:relative;display:block;height:0;padding:0;overflow:hidden;padding-bottom:56.25%}.videoplayer .ardplayer{position:absolute;top:0;left:0;bottom:0;height:100%;width:100%;border:0}.videoplayer.video1By1{padding-bottom:100%}.videoplayer.video4By3{padding-bottom:75%}.videoplayer.video16by9{padding-bottom:56.25%}