body{margin:0;overflow:hidden;position:relative}canvas{display:block}.container{position:absolute;top:10px;left:10px;background-color:#fffc;padding:10px;border-radius:5px}.notification{position:fixed;top:15%;left:50%;transform:translate(-50%);background-color:#444;color:#fff;padding:15px;border-radius:5px;display:none;font-size:18px;opacity:0}.notification.show{display:block;opacity:1}.item{font-size:18px;padding:5px;display:inline-block}@media (max-width: 650px){.item{display:block}}