html,body {
	width:100%;
	min-height:100%;
	margin:0;
	font-family:Arial, sans-serif;
	background-color:lightyellow;
	font-size:12pt;
}

 header{
	height:40px;
	width:100%;
	background-color:black;
	color:#FFF;

}

header h1{
	font-size:30px;
	line-height:40px;
	text-transform:uppercase;
	margin:0;
	margin-left:10px;
	margin-right:10px;
	display:inline-block;
	vertical-align: top;
}

header nav{
	vertical-align: top;
	display:inline-block;
	height:100%;
}

header nav ul{
	margin:0;
	padding:0;
	list-style-type:none;
	height:100%;
}

header nav ul li{
	display:inline-block;
	margin:0;
	height:100%;
	width:140px;
	text-align:center;
}

header nav ul li a{
	display:block;
	width:100%;
	height:100%;
	line-height:40px;
	color:#FFF;
	text-decoration:none;
}

header nav ul li a:hover{
	background-color:#333;
}

.image1{
	margin-top:20px;
	margin-left:0;
	width:150px;
	height:150px;
	border:solid,4px;
}

p{
	float:center;
	margin:5px;
	font-family: Times New Roman;
	font-size:18px;
}

section h1{
	font-family:Times New Roman;
	font-size:30px;
	color: darkred;
}

section{
	float:center;
	margin-top:10px;
	margin-left:20px;
}

form {
	margin-left:40%;
	margin-top:10%;
}

h2{
	color:darkred;
	padding:10px 50px 20px;
	margin-left:auto;
	width:65%;
	font-size:28px;
}
 h3{
	padding:10px 50px 20px;
	margin-left:auto;
	width:65%;
}

section ul li{
	width:70%;
	margin-left:auto;
}

h4{
	width:70%;
	margin-left:auto;
}

h5{
    font-size:20px;
    margin:10px;
}

h6{
	font-family:Times new roman;
	font-size:30px;
	margin-top:0;
	margin:0;
	
}

div{
	width:100%;
	height:200%;
	margin-left:10px;
	text-align:left;
}

img{
	height:400px;
	width:400px;
	border:solid 4px;
}

.image2{
	height:400px;
	 width:500px;
}

.image3{
	height:400px;
	 width:450px;
}

.image4{
	height:500px;
	 width:450px;
}

.btn-retour {
            display: inline-block;
            padding: 10px 20px;
            font-size: 16px;
            color: #fff;
            background-color: #007BFF;
            border: none;
            border-radius: 5px;
            text-decoration: none;
            text-align: center;
            cursor: pointer;
}

.btn-retour:hover {
            background-color: #0056b3;
}