.side-bar a,.chat-tips i {background: url(rightbar1.png) no-repeat;}
.side-bar {width: 150px;position: fixed;margin:0 auto;right: 25px;font-size: 0;line-height: 0;z-index: 100;  bottom: 120px;}
.side-bar a {width: 150px;height: 187px;display: inline-block;margin-bottom: 2px;}
.side-bar .icon-chat {background-position: 0 0px;position: relative;}
.side-bar .icon-chat:hover .chat-tips {display: block;}
.chat-tips {padding: 20px; position: absolute;right: 122px;top: -195px;display: none;}
.chat-tips img {width: 384px;height: 387px;}