#ul_submenu
{
padding:0;
margin:0;
list-style-type:none;
}
.a_submenu
{
display:block;
width:6em;
text-decoration:none;
color:white;
background-color:purple;
padding:0.2em 0.6em;
border-bottom:1px solid white;
}
.a.a_submenu:hover {background-color:#ff3300;}