进度条是网站中常见的一种，今天经过研究外国一个网站的例子，试着用css3来实现进度条：

     html代码如下：

    <div class="progress-bar blue stripes">
    <span style="width: 40%"></span>
</div>
<p>Set above to:
    <a href="#" class="quarter">25%</a> /
    <a href="#" class="half">50%</a> /
    <a href="#" class="three-quarters">75%</a> /
    <a href="#" class="full">100%</a>
</p>

<div class="progress-bar orange shine">
    <span style="width: 65%"></span>
</div>
<p>Set above to:
    <a href="#" class="quarter">25%</a> /
    <a href="#" class="half">50%</a> /
    <a href="#" class="three-quarters">75%</a> /
    <a href="#" class="full">100%</a>
</p>

<div class="progress-bar green glow">
    <span style="width: 55%"></span>
</div>
<p>Set above to:
    <a href="#" class="quarter">25%</a> /
    <a href="#" class="half">50%</a> /
    <a href="#" class="three-quarters">75%</a> /
    <a href="#" class="full">100%</a>
</p>

css样式：

body{ background:#222; width:360px; margin:0 auto; font:13px 'trebuchet MS',Arial,Helvetica;}
h2, p {text-align: center;color: #fafafa;text-shadow: 0 1px 0 #111;    }
 a {color: #777;}

 .progress-bar{ background-color:#1a1a1a; height:25px; padding:5px; width:350px; margin:70px 0 20px 0;-moz-border-radius:5px; -webkit-border-raidus:5px; border-radius:5px;-moz-box-shadow:0 1px 5px #000 inset, 0 1px 0 #444;-webkit-box-shadow:0 1px 5px #1a1a1a inset,0 1px 0 #444; box-shadow:0 1px 5px inset,0 1px 0 #444;  }
.progress-bar span{ display:inline-block; height:100%; background-color:#777; -moz-border-radius:3px;-webk