#ctnavbox ul li:hover .sub{display:block}
 @media screen and ( max-width: 800px ){
.ph_icon{
               float:right;
               width:52px;
               height:45px;
               background:  url(/uiFramework/commonResource/image/2022072316590189141.png) no-repeat center center!important;
               background-size:22px;
           }
}