.ulPrimaryNav{
    overflow-y:auto;
    height:auto;
    padding:0 0 50% 0 !important;
}
#navMainNavigation ul{
    padding-left:0;
    overflow-y:auto;
    height:100%;
}
@media (max-width: 1200px) {
   .ulPrimaryNav{
    height:120vh !important;
    padding:0 0 20% 0 !important;	
   }
   header.masthead{
       padding-left:0 !important;
   }
   header.masthead .container{
       margin:0 auto !important;
       max-width:80% !important;
   }
}