a.contributor-button {
    line-height: 20px;
    display: block;
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
    text-decoration: none !important;
    font-size: 20px;
    text-align: center;
    font-weight: bold;
    text-transform: none;
    text-shadow: 1px 1px 3px rgba(0,0,0,.4);
    border: 2px solid rgba(119, 92, 11, 0.19);
    background: #666699; /* Link color */
    color: white;
}    

a.contributor-button:hover {
    background: #52527B;
}