html, body {
    width: 100%;
    height: 100%;
}

body {
    font-family: "Roboto", sans-serif;
    background: url(images/background.jpg) center center no-repeat;
    background-size: cover;
}
p{
	text-align: left;
}
.container {
    position: relative;
}
.carte {
    position: relative;
    background: rgba(255,255,255,.95);
    border-radius: 5px;
    padding: 15px;
    width: 300px;
    text-align: center;
    margin: 0 auto;
    top: 50vh;
    transform: translateY(-35vh);

}

.carte h1 {
    font-size: 1.25rem;
    margin-top: 15px;
    font-weight: 700;
}

.carte h2 {
    font-size: 1rem;
    margin: 15px 15px 20px;
}
ul{
	list-style: none;
	padding: 0;
}
.social li{
	display: inline-block;
	width: 20%;
	margin: 2%;
	opacity: 0.8;
	transition: 0.4s;
}
.social li:hover{
	display: inline-block;
	width: 20%;
	margin: 2%;
	opacity: 1;
	transform: translateY(-5%);
	transition: 0.4s;
}
.social{
	width: 70%;
	margin: 0 auto;
}
.presentation{
	width: 80%;
	margin: 0 auto;

}