代码如下：

/* Name: qq悬浮客服代码<style>.site-contact{position:fixed;left:40px;bottom:40px;z-index:999}.site-contact .btn{border-radius:50px;box-shadow:1px 3px 0 rgba(0,0,0,0.1);-webkit-transition:all .3s ease-in-out;-moz-transition:all .3s ease-in-out;transition:all .3s ease-in-out}.site-contact .btn:hover{position:relative;top:1px}@media (*x-width: 544px){.site-contact{display:none;left:20px;bottom:20px}}</style><div class="site-contact">
 <a class="btn btn-success" title="QQ 599928887" href="http://wpa.qq.com/msgrd?v=3&uin=599928887&site=qq&menu=yes">QQ咨询</a></div>