.case{
width:760px;
border:1px blue dashed;
text-align:center;
}

.center {
	text-align:center;
}

.head{
width:760px;
border:1px red dashed;
}

.menu{
width:160px;
border:1px green dashed;
float:left
}

.body{
width:580px;
border:1px green dashed;
}

.menuitem{
width:160px;
border:1px orange dashed
}
.img {
	border:2px red solid
}