//这是facebook
<a href="/sharer/sharer.php?u=/index.html" target="_blank" class='icon' ><img src="imgs/facebook-icon.png" alt=""></a>
//这是twitter
<a href="/intent/tweet?text=北京华云融汇科技有限公司;url=/index.html" class='icon' target="_blank" ><img src="imgs/twitter-icon.png" alt=""></a>
