CSS3 页面中展示邮箱列表点击弹出发送邮件界面

代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>CSS教程</title> 
<style>
ul {
    list-style-type: none;
}

ul li a {
    color: green;
    text-decoration: none;
    padding: 3px; 
    display: block;
}

@media screen and (max- 699px) and (min- 520px) {
    ul li a {
        padding-left: 30px;
        background: url(email-icon.png) left center no-repeat;
    }
}
</style>
</head>
<body>

<h1>重置浏览器窗口，查看效果!</h1>

<ul>
  <li><a data-email="johndoe@example.com" href="mailto:johndoe@example.com">John Doe</a></li>
  <li><a data-email="marymoe@example.com" href="mailto:marymoe@example.com">Mary Moe</a></li>
  <li><a data-email="amandapanda@example.com" href="mailto:amandapanda@example.com">Amanda Panda</a></li>
</ul>

</body>
</html>
效果：