.suspension{position:fixed;z-index:55;right: 30px;bottom:85px;width: 50px;height: 50px;}
.suspension-box{position:relative;float:right;}
.suspension .a{display:block;width:44px;height:44px;background-color:#353535;margin-bottom:4px;cursor:pointer;outline:none;}
.suspension .a .i{float:left;width:44px;height:44px;background-image:url(../images/side_icon.png);background-repeat:no-repeat;}
.suspension .a-top .i{background-position:-132px 0;}
.suspension .a-top{background: #444444;display:none;}
.suspension .a-top:hover{background: #444444;}