Styling ordered list numbers/numerals credit: http://www.456bereastreet.com/archive/201105/styling_ordered_list_numbers

gistfile1.css

ol {
    counter-reset:li; /* Initiate a counter */
    margin-left:0; /* Remove the default left margin */
    padding-left:0; /* Remove the default left padding */
}
ol > li {
    position:relative; /* Create a positioning context */
    margin:0 0 6px 2em; /* Give each list item a left margin to make room for the numbers */
    padding:4px 8px; /* Add some spacing around the content */
    list-style:none; /* Disable the normal item numbering */
    border-top:2px solid #666;
    background:#f6f6f6;
}
ol > li:before {
    content:counter(li); /* Use the counter as content */
    counter-increment:li; /* Increment the counter by 1 */
    /* Position and style the number */
    position:absolute;
    top:-2px;
    left:-2em;
    -moz-box-sizing:border-box;
    -webkit-box-sizing:border-box;
    box-sizing:border-box;
    width:2em;
    /* Some space between the number and the content in browsers that support
       generated content but not positioning it (Camino 2 is one example) */
    margin-right:8px;
    padding:4px;
    border-top:2px solid #666;
    color:#fff;
    background:#666;
    font-weight:bold;
    font-family:"Helvetica Neue", Arial, sans-serif;
    text-align:center;
}
li ol,
li ul {margin-top:6px;}
ol ol li:last-child {margin-bottom:0;}