canvas {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 1;
}
#modal {
    visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
    width: 500px;
    height: 400px;
}
@media only screen and (max-width: 999px) {
    * {
	font-size: 15px;
    }
}