.ding-nav{
    height: 30px;
    background-color: #ccc;
    font-size: 12px;
    line-height: 30px;
    position: relative;
}
.ding-nav-left span,.ding-nav-left a
{
    margin-left: 10px;


}
.ding-nav-left a.login{
    border-right: 1px black solid;
  padding-right: 10px;

}
.zhongjian{
   display: flex;
    position: absolute; 
    text-align: center;
    
}
.zhongjian.gerenzhuye{ 
    display: flex;
}