html,body{box-sizing:border-box;height:100dvh;margin:0;padding:0;line-height:1.4}canvas{display:block;touch-action:none;width:100%;height:100dvh}:where(select,button,input,textarea){font:inherit}.overlay-panel{position:fixed;z-index:1;background:#0009;margin:0;padding:.5rem;font-family:monospace;top:0;left:0}.overlay-panel :where(p,pre){margin:0}.overlay-row{display:block;white-space:pre}.overlay-row a{color:inherit}