@import url("https://fonts.googleapis.com/css?family=Muli&display=swap");

* {
	box-sizing: border-box;
}

body {
	font-family: sans-serif;
	background-color: #111111;
	display: flex;
	align-items: center;
	flex-direction: column;
	justify-content: center;
	height: 100vh;
	overflow: hidden;
	margin: 0;
}

.back {
	position: absolute;
	top: 2vh;
	left: 5vw;
	color: #ffffff;
	font-size: 2rem;
	font-family: initial;
}

.instruction {
	color: #ffffff;
	font-size: 2rem;
	margin-bottom: 1rem;
}

.container {
	display: flex;
	align-items: center;
	justify-content: center;
	flex-wrap: wrap;
	max-width: 500px;
}

.square {
	background-color: #1d1d1d;
	box-shadow: 0 0 2px #000000;
	height: 20px;
	width: 20px;
	margin: 2px;
	transition: 2s ease;
}

.square:hover {
	transition-duration: 0s;
}