* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	
	/* empêcher sélection, important pour téléphones */
	-webkit-user-select: none;
	-webkit-touch-callout: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}

body {
	background: black;
	text-align: center;
}

#game {
	width: 80%;
	height: 80%;
	position: absolute;
	top: 50%;
	transform: translate(-50%, -50%);
	border: 2px solid grey;
}

#controls {
	position: absolute;
	top: 92%;
	left: 10%;
	width: 80%;
	display: grid;
	grid-template-columns: 1fr 1fr 1fr 1fr;
	grid-gap: 10px;
}

.button {
	color: grey;
	text-align: center;
	border: 1px solid lightgrey;
	border-radius: 3px;
	box-shadow: 2px 2px 2px lightgrey;
}

#invisibleGauche {
	position: absolute;
	top: 10%;
	left: 10%;
	width: 25%;
	height: 80%;
}

#invisibleSaut {
	position: absolute;
	top: 10%;
	left: 35%;
	width: 30%;
	height: 80%;
}

#invisibleDroite {
	position: absolute;
	top: 10%;
	left: 65%;
	width: 25%;
	height: 80%;
}

#author:link, #author:visited {
		color: white;
		text-decoration: none;
}

#author:hover {
		text-decoration: underline;
}