Combo,
Combo[BORDER] {
    color: #4a4a4a;
    background-color: #ecf1f7;
    border: 1px solid #aaaaaa;
    border-radius: 0px;
    padding: 2px 5px;
    background-image: none;
    text-shadow: none;
    box-shadow: none;
}

Combo.searchBox {
    background-image: gradient(linear, left top, right top,
              from( rgb(230, 230, 230) ),
              to( rgb(180, 180, 180) )
          );
    border: 1px rgb(200, 200, 200);
}

Combo-Button.searchBox {
    border-left: 0px;
    background-color: rgb(220, 220, 220);
}