* {
	box-sizing: border-box;
}

body {
	background-color: #222222;
	width: 100%;
	height: 100%;
	display: flex;
	padding: 0;
	margin: 0;
	margin-top: 80px;
}

.game-container {
	position: relative;
	width: 1200px;
	height: 900px;
	margin: 0 auto;
}
canvas {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background-color: #ffffff;
}
.main-menu {
	position: absolute;
	top: 320px;
	left: 450px;
	width: 300px;
	height: 260px;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: space-evenly;
}
.main-menu button {
	width: 100%;
	height: 80px;
	font-size: 24px;
	font-weight: bold;
}