html{box-sizing:border-box}*,:after,:before{box-sizing:inherit}body,html{margin:0;padding:0}body{background-color:#fff}.app{background-color:gray;width:66.6%;position:absolute;top:50%;left:50%;-webkit-backface-visibility:hidden;backface-visibility:hidden;-webkit-transform:translate(-50%,-50%);-ms-transform:translate(-50%,-50%);transform:translate(-50%,-50%)}.app:after{display:block;content:'';position:absolute;top:0;right:0;bottom:0;left:0;box-shadow:inset 0 0 0 1px #fff,0 0 0 2px #fff}.app>img{display:block;width:100%;vertical-align:bottom;-webkit-transform:translateZ(0);transform:translateZ(0)}.stage{position:absolute;width:100%;height:100%}.stage>canvas{width:100%;height:100%}