Hello
Try adding the following to the Custom CSS field of your templates parameters...
#header, #container_spacer2 .wrapper960 {
background-color: rgba(0, 0, 0, 0) !important;
}
.hornavmenu {
background: none repeat scroll 0 0 rgba(0, 0, 0, 0) !important;
border: medium none;
box-shadow: none;
}
.hornavmenu:before {
display: none;
}
Ciarán