.box-htop3 .leo-megamenu .navbar-nav::before{ border-top: 0 !important; border-bottom: 0 !important;}

@media (min-width:992px)
{  .box-htop3 .leo-megamenu .navbar-nav:before {border-top: 0 !important; border-bottom: 0 !important;}
   .border-bottom {border-bottom: 1px solid lightgray; height:1px;} 
}