a.disablestylelink{
	color: inherit;
	text-decoration: inherit;
}
body{
	font-family: sans-serif;
	margin: 0;
	padding: 0;
}
header{
	background-color: black;
	color: white;
	width: 100%;

	text-align: center;
}
header > .c2 > h1{
	padding: 5px;
	margin: 0;
	font-size: 40px;
	cursor: pointer;
}
header > .c1{
	display: flex;
	justify-content: space-between;
	font-size: 26px;
	padding: 5px;
	border-top: white 2px solid;
}
header > .c2{
	
}
.bouton_retour{
	display: none;
    height: 55px;
    align-items: center;
	float: left;
    z-index: 1;
    position: absolute;
}
.bouton_retour>a{
	font-size: 36px;
    font-weight: bolder;
    margin-bottom: 3px;
    margin-left: 4px;
}
@media screen and (max-aspect-ratio: 13/9){
	.bouton_retour.nohome{
		display: flex;
	}
}