/*ul.plainSelect {
    border: 1px solid #000;
}
ul.plainSelect li {
    background-color: #f90;
    display: list-item;
}

ul.plainSelect li.unselected {
    background-color: #fff;
    display: none;
}

ul.plainSelect:hover li,
ul.plainSelect:hover li.unselected {
    display: list-item;
}*/