.cfcleftgobackbutton{display:flex;position:fixed;height:40px;line-height:40px;background:#fff;width:100%;border-bottom: 2px solid #f2f2f2;z-index:999;}
.cfcleftgobackbuttonfixed{height:42px;}
.cfcleftgobackbutton i{width: 30px;
    height: 40px;
    background: red;
    font-size: 0px;
    margin-left: 10px;background:url(cfcleftarrow.jpg) no-repeat;    background-size: 30% 40%;
    background-position: center center;}
.cfcleftgobackbutton em{flex:1;font-size:0px;}