ul.list2  {
    width: 6em;
    padding: 0;
    list-style-type: none;
}
ul.list2 li {
    margin: 0;
}
ul.list2 li a {
    display: block;
    color: #000;
    background-color: #ccf;
    border-right: 0.55em solid #66f;
    padding: 0.25em 0.5em;
    text-decoration: none;
}
ul.list2 li a:hover {
    color: #fff;
    background-color: #66f;
    border-right-color: #00f;
}