.termino {
    border-left: 2px solid #215A9A;
    padding-left: 30px;
}
#letras a {
    background: #f5f4f4;
    font-size: 1.125em;
    padding: 5px 8px;
    margin: 0 0 2px 2px;
    cursor: pointer;
}
#letras li.active > a {
    background: #215A9A;
}