ul.mouseovermenu {
font-size:10px;
padding:0;
margin:0;
}

ul.mouseovermenu  li {
list-style-type:none;
margin:0;
padding:0;
background:transparent;
display:block;
}

ul.mouseovermenu a {
display:block;
color:black;
text-decoration:none;
background:transparent;

}

ul.mouseovermenu a:hover {
background:#ff0;
}