#menu-horizontal 
{
width: 980px;
font: 16px arial;
height: auto; 
list-style-type: none; 
margin: auto; 
padding: 0; 
border: 0; 
}
#menu-horizontal li 
{
float: left;
font: 16px arial;
width: 122px; 
margin: auto; 
padding: 0;
border: 0;
}
#menu-horizontal li a 
{
display: block;
color: #FFFFFF; 
background-color: #333333; /* Gris Noir */
margin: 0; padding: 4px ;
border: 0px; 
text-decoration: none; 
}
#menu-horizontal li a:hover 
{
background-color: #666666; /* Gris foncé*/
}
#menu-horizontal .menu-deroulant 
{
display: none;
font: 13px arial;
list-style-type: none;
margin: 0; 
padding: 0;
border: 0;
position: absolute;
}
#menu-horizontal .menu-deroulant li 
{
float: none;
font: 13px arial;
margin: auto;
padding: 0;
border: 0;
width: 122px; 
}
#menu-horizontal .menu-deroulant li a 
{
display: block;
color: #FFFFFF;
margin: 0;
border: 0;
text-decoration: none; 
background-color: #5593D7; /* Bleu ciel*/
}
#menu-horizontal .menu-deroulant li a:hover
{
background-color: #0966C5;  /* Bleu foncé*/
}
#menu-horizontal li:hover .menu-deroulant
{
display: block; 
}