html, body { height: 100%; width: 100%;}
body, div , { margin: 0; padding: 0; height: 100%; width: 100%;}

html { 
  margin:0;
  padding:0;
  background: url('../images/nuages1.jpg') no-repeat fixed center; 
  -webkit-background-size: cover; /* pour anciens Chrome et Safari */
  background-size: cover
}

#global 
{
	width: 1100px;
	margin-top: 50px;
	margin-bottom: 50px;	
	margin-left: auto;
	margin-right: auto;
	overflow: auto;
}

#tete
{
	padding: 1px;
	background: rgba(238, 130, 238, 0.6);    
}

#bienvenue
{
	padding: 1px;
	height: 100px;
	font-size: 30px;
	background-color: rgba(238, 130, 238, 0.6);
	color: #800000;
	overflow: auto; 
}

#pied
{
	padding: 1px;
	background-color: rgba(238, 130, 238, 0.6);
}

#droits
{
	padding: 1px;
	background-color: rgba(000, 102, 255, 0.6);
	color: #000000;
}

#nav 
{
	padding: 0; margin: 0;
	background-color: rgba(238, 130, 238, 0.6);
	text-align: center; /* centrer le texte */
}

#nav li 
{
	display: inline;
	list-style: none;
	margin-left: 1px;
	margin-right: 15px;
}

#nav a 
{
	display:inline-block;
	padding : 10px;
	line-height: 16px;
	font-size: 14px;
	text-decoration: none;
	background-color: lightsteelblue;
	color: blue;
}

#nav a:hover 
{	
	background-color: #7fffd4;
	color: brown;
}