.conteneur {
	width: 100%;
	max-width: 600px;
	padding: 100px 20px;
	margin: auto;
}

.conteneur p:last-child {
	padding: 0;
}

#ecran {
	font-family: 'Orbitron', sans-serif;
	font-size: 55px;
	letter-spacing: 5px;
	padding: 30px;
	border: 2px solid #ddd;
	border-radius: 0.5em;
	margin-bottom: 8px;
	overflow: scroll;
	white-space: nowrap;
}

.bouton {
	text-align: center;
	font-size: 26px;
	width: 70px;
	height: 70px;
	padding: 20px 10px;
	margin: 8px;
	border: 2px solid #001d1d;
	border-radius: 0.5em;
}

@media (max-width: 479px) {
	#ecran {
		font-size: 30px;
		padding: 20px 10px;
	}
	
	.bouton {
		font-size: 18px;
		width: 40px;
		height: 40px;
		padding: 9px 5px;
	}
}