:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400}body{margin:0}.container{display:flex;flex-direction:column}#sandCanvas{width:500px;height:500px;border:1px solid grey;-webkit-user-select:none;user-select:none;touch-action:none}