In my Primefaces, I'm using menubar. In menu right side triangle icon is not necessary so I want to remove it. I try it on CSS
   .submenu .ui-icon-triangle-1-s{
        display: none;
    }
But it will affect entire page other components (i.e selectOneMenu) but I need remove triangle icon in submenu. I try below Code:
 <h:form>
    ...
    <p:menubar>
       <p:submenu label="File">
          <p:menuitem value="Open"/>
          ...
       </p:submenu>
    </p:menbar>
    .....
    <p:selectOneMenu id="User">
       .....
    </p:selectOneMenu>
 </h:form>
 
    