If you want to style a button link to look like XML icon, you can use the following stylesheet

    <-- from style.css -->

    a.button:link { 
    font-weight: bold; color: white; 
    font-size: 10px;
    font-family: Verdana;
    background-color: #FF6600; 
    border-left: 1px solid #FF9A57; 
    border-top: 1px solid #FFC8A4; 
    border-right: 1px solid #7D3302; 
    border-bottom: 1px solid #3F1A01; 
    padding: 2px 5px 1px 4px; 
    margin: 0px 0px 0px 0px; 

    a.button:hover { 
    text-decoration: none;