这里是一篇文章概述如何：Styling ordered list numbers

而here是从该文章构建的演示。

另外在可怕的链接腐败的情况下 – 这里是所需的主要CSS代码(这可以应用于任何有序列表)

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;}​

该代码将产生一个定制的订单列表;虽然不是你要求的风格。我会离开定制工作给你:)欢呼