/* CSS Document */

ul, li{
list-style-type: none;
margin:0;
padding:0;
}

ul{
position:absolute;
left: 50%;
margin-left: -250px;
background: transparent url("images/cours_de_physique_icones.gif") top left no-repeat;
height:540px;
width:500px;
text-align:center;
}

li {
display:inline;
}

li a{
display:block;
height:108px;
width:500px;
line-height:108px;
font-family:Verdana, Arial, Helvetica, sans-serif;
font-size:20px;
text-decoration:none;
color:#333333;
}

li a:hover{
color:#663399;
background: transparent url("images/cours_de_physique_icones.gif") top left no-repeat;
text-transform:uppercase;
}

a#opt:hover{
background-position : 0% -540px;
}

a#elec:hover{
background-position : 0% -648px;
}

a#meca:hover{
background-position : 0% -756px;
}

a#ther:hover{
background-position : 0% -864px;
}

a#em:hover{
background-position : 0% -972px;
}

img{
border:0;
}