#kboard_media_background{position:fixed;left:0;top:0;width:100%;height:100%;background-color:#000;z-index:99999}#kboard_media_wrapper{position:fixed;overflow:auto;-webkit-overflow-scrolling:touch;z-index:99999}#kboard_media_wrapper iframe{display:block;margin:0;border:0;width:100%;height:100%}