html,body{margin:0;height:100%;overflow:hidden;background:#000}canvas{display:block}#overlay{position:fixed;top:10px;left:10px;z-index:9999;padding:10px 12px;border-radius:10px;background:#0000008c;color:#fff;font:12px/1.4 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;white-space:pre;pointer-events:none}#overlay.hidden{display:none}