body
{
   margin: 0;
   font-size: 1.1em;
}

#bloc_page
{
	width: 70%;
	margin: 0 auto auto auto;
}

#div1, #div2{
	margin: 0px;
	padding: 0px;
}

figure
{
    text-align: center;
}


header h1
{
    font-family: arial;
    text-align: center;
    color: white;
    font-size: 6em;
	text-shadow: 2pt 2pt 4pt black;
	background-color: rgba(255,255,255,0.5);
	background-image: url(louvre1.jpg);
}

/* création du menu nav */

nav{
	width: 80%;
	margin: 0 auto;
	margin-top:-50px;
	background-color: white;
	position: sticky;
	top: 0px;
	background-color: rgba(184, 151, 124, 0.8);
}

nav ul{
	list-style-type: none;
	
}

nav ul li{
	float: left;
	width: 25%;
	text-align: center;
	
}

nav ul::after{
	content: "";
	display: table;
	clear: both;
}


nav a{
	display: block;
	text-decoration: none;
	color: black;
	border-bottom: 2px solid transparent;
	padding: 10px 0px;
}

nav a:hover{
	color: red;
	border-bottom: 2px solid gold;
}

.sous{
	display: none;
	box-shadow: 0px 1px 2px #CCC;
	background-color: white;
	position: absolute;
    width: 100%;
    z-index: 1000;
	
}
nav > ul li:hover .sous{
	display: block;
	
}

.sous li{
	float: none;
	width: 100%;
	text-align: left;
	background-color: rgba(184, 151, 124, 0.8);
}

.sous a{
	padding: 10px;
	border-bottom: none;
	background-color: rgba(184, 151, 124, 0.8));
}

.sous a:hover{
	border-bottom: none;

}

.deroulant > a::after{
    content:" ▼";
    font-size: 12px;
}

p {
	margin: 20px
	
}
img{
	
	width:300;
	height: 250;
	margin: 20px;
}