*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;background-color:#000;overflow:hidden;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}#canvas{display:block;width:100%;height:100%}