纯CSS结合DIV实现的右侧底部简洁悬浮效果

<div class="side-bar">
<a href="#" class="icon-qq">QQ在线咨询</a>
<a href="#" class="icon-chat">微信<div class="chat-tips"><i></i>
<img style="width:138px;height:138px;" src="helloweba.jpg" _fcksavedurl=""helloweba.jpg"" alt="微信订阅号"></div></a>
<a target="_blank" href="" class="icon-blog">微博</a>
<a href=<a href="https://.jb51.">https://.jb51.</a> class="icon-mail">mail</a>
</div>

.side-bar a,.chat-tips i {background: url(right_bg.png) no-repeat;}
.side-bar {width: 66px;position: fixed;bottom: 20px;right: 25px;font-size: 0;line-height: 0;z-index: 100;}
.side-bar a {width: 66px;height: 66px;display: inline-block;background-color: #ddd;margin-bottom: 2px;}
.side-bar a:hover {background-color: #669fdd;}
.side-bar .icon-qq {background-position: 0 -62px;}
.side-bar .icon-chat {background-position: 0 -130px;position: relative;}
.side-bar .icon-blog {background-position: 0 -198px;}
.side-bar .icon-mail {background-position: 0 -266px;}

.side-bar .icon-chat:hover .chat-tips {display: block;}
.chat-tips {padding: 20px;border: 1px solid #d1d2d6;position: absolute;right: 78px;: -55px;background-color: #fff;display: none;}
.chat-tips i {width: 9px;height: 16px;display: inline-block;position: absolute;right: -9px;: 80px;background-position:-88px -350px;}
.chat-tips img {width: 138px;height: 138px;}