html {
	font-family:  'Roboto Slab', serif;
	color: white;
	font-size: 30px;
	line-height: 40px;
	background-color: black;
}
a {
	color: white;
	text-decoration: none;
}
a:hover {
	text-decoration: underline;
}
#background {
	background-color: darkslategray;
	background-size: cover;
	background-repeat: no-repeat;
	position: fixed;
	right: 0;
	bottom: 0;
	min-width: 100%;
	min-height: 100%;
	z-index: -100;
}
#intro {
	width: 50%;
	padding: 5%;
	min-width: 600px;
	margin: auto;
	margin-top: 100px;
	margin-bottom: 100px;
	text-align: center;
	background-color: rgba(0,0,0,0.5);
}
#gauche {
	margin-left: 20%;
	float: left;
	width: 200px;
	height: 100px;
}
#droite {
	margin-right: 20%;
	float: right;
	width: 200px;
	height: 100px;
}
#gauche button, #droite button {
	display: block;
	color: white;
	text-align: center;
	font-size: 30px;
	line-height: 40px;
	border: none;
	background-color: #4CAF50;
	padding: 14px 28px;
	cursor: pointer;
}
#gauche button:hover, #droite button:hover {
	background-color: #ddd;
	color: black;
}
#fin {
	clear: both;
	text-align: center;
	font-size: 40px;
	margin-top: 300px;
	margin-bottom: 100px;
}