/* Keeps only the active dropdown open while moving from the top bar into its menu. */
.topnav-dropdown:hover:before,
.topnav-dropdown:focus-within:before{
  content:'';
  position:absolute;
  left:0;
  top:100%;
  width:100%;
  height:12px;
}
.topnav-dropdown-menu:before{
  content:'';
  position:absolute;
  left:0;
  right:0;
  top:-12px;
  height:12px;
}
.topnav-dropdown-menu{
  z-index:120;
}