html,body{overscroll-behavior:none;touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;height:100%;margin:0;overflow:hidden}#app{padding:calc(env(safe-area-inset-top) + var(--safe-extra,0px)) calc(env(safe-area-inset-right) + var(--safe-extra,0px)) calc(env(safe-area-inset-bottom) + var(--safe-extra,0px)) calc(env(safe-area-inset-left) + var(--safe-extra,0px));box-sizing:border-box;position:fixed;inset:0}#board{touch-action:none;width:100%;height:100%}#board canvas{display:block}