body {
	text-align: center;
	background-color: #011f3f;
}
#level-title {
	font-family: "Press Start 2P", cursive;
	font-size: 3rem;
	margin: 3%;
	color: #fef2bf;
}
.container {
	display: block;
	width: 50%;
	margin: auto;
}
.btn {
	margin: 20px;
	display: inline-block;
	height: 200px;
	width: 200px;
	border: 10px solid black;
	border-radius: 20%;
}
.game-over {
	background-color: red;
	opacity: 0.8;
}
.red {
	background-color: red;
}
.green {
	background-color: green;
}
.blue {
	background-color: blue;
}
.yellow {
	background-color: yellow;
}
.pressed {
	box-shadow: 0 0 20px white;
	background-color: grey;
}