/* navdown on collapse section */
#navdown .navbar-collapse .nav-link.active {
   color: rgba(0, 0, 0, 1) !important;
}

/* navdown on nav section */
#navdown .nav .nav-link {
   position: relative;
   display: flex;
   align-items: center;
   justify-content: center;
   padding: 15px;
}

#navdown .nav .nav-link::before {
   content: '•';
   position: absolute;
   bottom: 0;
   left: 50%;
   transform: translateX(-50%);
   font-size: 1.25rem;
   line-height: 1;
   color: rgba(0, 0, 0, 0);
}

#navdown .nav .nav-link img {
   width: auto;
   height: 20px;
   opacity: .5;
}

#navdown .nav .nav-link.active img {
   opacity: 1;
}

#navdown .nav .nav-link.active::before {
   color: rgba(0, 0, 0, 1);
}