dl, dt, dd, ul, li {
margin: 0;
padding: 0;
list-style-type: none;
}
#menu {
position: absolute;
width: 800px;
}
#menu dl {
float: left;
margin: 0 1px;
}
#menu dt {
cursor: pointer;
text-align: center;
}
#menu dd {
border: 1px solid gray;
position: absolute;
}
#menu li {
text-align: center;
background: #000;

}
#menu li a, #menu dt a {
text-decoration: none;
display: block;
height: 100%;
border: 0 none;
}