html, body {
margin: 0;
padding: 0;
}
body {

background-image: url(images/arriereplan.jpg);
background-repeat:no-repeat;
font-family: Verdana, sans-serif; 
font-size: 100%;
}
h1 {
font-size: 100%; 
color: navy; 
text-align: center;
}
h2 {
font-size: 150%; 
color: red; 
padding-left: 15px;

}
p,ul,li,td {
color: black; 
}
a {
color: green;
text-decoration: underline;
}
a:visited {
color: #FF00FF;
}
a:hover {
color: #0000FF;
text-decoration: none;
}
//gestion de la mise en page

#entete, #footer {
text-align:center;
}
#menu {
float:right;
}
#contenu {
margin-right:155px;
}