body{
font-family:'Lucida Grande','Lucida Sans Unicode',Verdana,Arial,sans-serif;
font-size:120%;
word-spacing:normal;
}
#container {
margin-right: auto;
margin-left: auto;
margin-top: 5px;
text-align: left;
width: 1235px;
background:#AAAAAA url(http://www.inclassablesmathematiques.fr/files/design/f_general2.png) 
}
.container-decorator1 {
width: 100%;
}
.container-decorator1 .container-decorator2 {
width: 100%;
background: transparent ;
}
#left {
overflow: hidden;
padding-top:16px;
line-height: 100%;
float: left;
width: 240px;
}
#right {
overflow: hidden;
float: right;
width: 225px;
line-height: 100%;
background: transparent;
color: #000000;
padding-top:16px;
}
#center {
width: 770px;
overflow: visible;
float: left;
background: transparent;
}
#banner {
color: #ffffff;
height: 120px;
line-height: 100%;
background: transparent url("http://www.inclassablesmathematiques.fr/files/design/bandeau.png") ;
}