style.css

:root {
	--game-background: rgb(24, 25, 33);
	--canvas-background: rgb(33, 34, 45);
	--canvas-border: #635c5c;
	--text-color: #5cdb95;
}

@keyframes for-title {
	from {
		color: #fff;
	}
	to {
		color: rgb(116, 112, 112);
	}
}

body {
	margin: 0;
	padding: 0;
	/* background-color: var(--game-background); */
	background-image: url("./assets/background.jpg");
	background-repeat: no-repeat;
}

.list-control {
	margin: 0;
	padding: 0;
	list-style: none;
}

.title {
	text-align: center;
	margin-top: 40px;
	color: #fff;
}

.title .game-btn {
	text-transform: uppercase;
	animation: for-title 0.9s infinite;
}

.title.hide {
	opacity: 0;
}

#cnvs {
	position: absolute;
	top: 50%;
	width: 100%;
	max-width: 560px;
	/* height: auto; */
	left: 50%;
	transform: translate(-50%, -50%);
	background-color: var(--canvas-background);
	border: 2px solid var(--canvas-border);
	box-sizing: border-box;
}

footer {
	background-color: var(--game-background);
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
}

footer h2 {
	margin: 10px 0;
	text-align: center;
	color: var(--text-color);
}