#mainNav {
  border-bottom: 2px solid rgba(255, 255, 255, 0);
  background-color: transparent;
  font-family: 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
  -webkit-transition: all 0.2s;
  -moz-transition: all 0.2s;
  transition: all 0.2s;
  width: 100vw;
}
#mainNav .navbar-brand {
  color: rgba(255, 255, 255, 0.7);
  font-family: 'Barlow', 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
  font-size: 1.7rem;
  padding-left: 0rem;
  left: 0; margin-left: 0rem;
  margin-left: 1.5rem;
  /*smallest size brand*/
}
#mainNav .navbar-brand:focus, #mainNav .navbar-brand:hover {
  color: rgba(255, 255, 255, 0.7);
}
#mainNav .navbar-nav > li.nav-item > a.nav-link,
#mainNav .navbar-nav > li.nav-item > a.nav-link:focus {
  font-size: 0.9rem;
  font-weight: 600;
  color: #212529;
  padding: 0.5rem;
}
#mainNav .navbar-menu {
  position: absolute;
  margin: 0; top: 55px; left: 0;
  width: 100vw; padding: 1rem;
  border-bottom: 1px solid #ccc;
}

#mainNav .navbar-nav > li.nav-item > a.nav-link:hover,
#mainNav .navbar-nav > li.nav-item > a.nav-link:focus:hover {
  color: #FFF;
  background-color: rgba(0, 0, 0, 0.5);
}
#mainNav .navbar-nav > li.nav-item > a.nav-link.active,
#mainNav .navbar-nav > li.nav-item > a.nav-link:focus.active {
  color: white !important;
  font-weight: 600;
  background-color: rgba(0, 0, 0, 1);
}
#mainNav .navbar-nav > li.nav-item > a.nav-link.active:hover,
#mainNav .navbar-nav > li.nav-item > a.nav-link:focus.active:hover {}

#mainNav.navbar-shrink {
  border-bottom: 1px solid rgba(33, 37, 41, 0.3);
  background-color: White;
}
#mainNav.navbar-shrink .navbar-brand {  
  font-size: 1.7rem;
  color: rgba(0, 0, 0, 1);
}
/* for Tablets */
@media (min-width: 376px) {
  #mainNav .navbar-brand {
    font-size: 2rem;
    padding: 0.2rem 2rem;
    margin-left: -2rem;
  }
  #mainNav.navbar-shrink .navbar-brand {
    font-size: 2rem;
  }

  #mainNav .navbar-menu {
    position: absolute; width: 100vw; margin: 0; left: 0; top: 0px; padding: 0.5rem 1.5rem;
    border-bottom: 1px solid #ccc; margin-left: -2rem;
  }
  #mainNav .navbar-nav > li.nav-item > a.nav-link,
  #mainNav .navbar-nav > li.nav-item > a.nav-link:focus {
    font-size: 1rem;
    font-weight: 600;
    color: #212529;
    padding: 0.5rem;
  }
}

@media (min-width: 992px) {
  #mainNav {
    border-bottom: 1px solid rgba(255, 255, 255, 0);
    background-color: transparent;
    margin: 0px;
    padding: 0rem 2rem;
    border: 0px;
  }

  #mainNav .navbar-brand {
    color: rgba(255, 255, 255, 1);
    font-size: 2.4rem;
    margin-top: -3px;
    left: 0; margin-left: 0rem;
  }
  #mainNav .navbar-menu {
    position: relative; top: 3px; left: 0px; margin: 0; padding: 0; 
    border-bottom: 0px;
    width: 100%;
  }  

  #mainNav .navbar-brand:focus, #mainNav .navbar-brand:hover {
    color: white; /* hover over brand in service website */
  }
  #mainNav .navbar-nav > li.nav-item > a.nav-link {
    padding: 0.55rem 0.9rem;
  }
  /* change the regular menu buttons text etc */
  #mainNav .navbar-nav > li.nav-item > a.nav-link,
  #mainNav .navbar-nav > li.nav-item > a.nav-link:focus {
    padding: 0.55rem 0.9rem;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    color: White;
    margin-top: 0.05rem;
  }
  #mainNav .navbar-nav > li.nav-item > a.nav-link:hover,
  #mainNav .navbar-nav > li.nav-item > a.nav-link:focus:hover {
    padding: 0.55rem 0.9rem;
    color: White;
  }

  #mainNav.navbar-shrink {
    border-bottom: 1px solid rgba(33, 37, 41, 0.3);
    background-color: #fff;
  }
  #mainNav.navbar-shrink .navbar-brand {
    font-size: 2.4rem;
  }
  #mainNav.navbar-shrink .navbar-brand:focus, #mainNav.navbar-shrink .navbar-brand:hover {
    color: Black;
  }
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link,
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:focus {
    font-weight: 600;
    color: Black;
  }
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:hover,
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:focus:hover {
    font-weight: 600;
    color: #FFF;
    background-color: black;
  }
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:hover,
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:focus.active {
    color: white !important;
    font-weight: 600;
    background-color: Black;
  }
}


@media (min-width: 1200px) {
  #mainNav {
    border-bottom: 1px solid rgba(255, 255, 255, 0);
    background-color: transparent;
    margin: 0px;
  }

  #mainNav .navbar-brand {
    color: rgba(255, 255, 255, 1);
    font-size: 2.4rem;
    margin-top: -3px;
    left: 0; margin-left: 1rem;
    border: 0px;
  }
  #mainNav .navbar-menu {
    position: relative; top: 3px; left: 0px; margin: 0; padding: 0; 
    border-bottom: 0px;
    width: 100%;
  }  

  #mainNav .navbar-brand:focus, #mainNav .navbar-brand:hover {
    color: white; /* hover over brand in service website */
  }
  #mainNav .navbar-nav > li.nav-item > a.nav-link {
    padding: 0.55rem 1.1rem;
  }
  #mainNav .navbar-nav > li.nav-item > a.nav-link,
  #mainNav .navbar-nav > li.nav-item > a.nav-link:focus {
    padding: 0.55rem 1.1rem;
    font-weight: 600;
    color: White;
  }
  #mainNav .navbar-nav > li.nav-item > a.nav-link:hover,
  #mainNav .navbar-nav > li.nav-item > a.nav-link:focus:hover {
    padding: 0.55rem 1.1rem;
    color: White;
  }

  #mainNav.navbar-shrink {
    border-bottom: 1px solid rgba(33, 37, 41, 0.3);
    background-color: #fff;
  }
  #mainNav.navbar-shrink .navbar-brand {
    font-size: 2.4rem;
  }
  #mainNav.navbar-shrink .navbar-brand:focus, #mainNav.navbar-shrink .navbar-brand:hover {
    color: Black;
  }
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link,
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:focus {
    font-weight: 600;
    color: Black;
  }
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:hover,
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:focus:hover {
    font-weight: 600;
    color: #FFF;
    background-color: black;
  }
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:hover,
  #mainNav.navbar-shrink .navbar-nav > li.nav-item > a.nav-link:focus.active {
    color: white !important;
    font-weight: 600;
    background-color: Black;
  }
}

@media (min-width: 1600px) {
  #mainNav .navbar-brand {
    color: rgba(255, 255, 255, 1);
    font-size: 2.4rem;
    left: 0; margin: 0rem 0.5rem;
    margin-top: -3px;
    border: 0px;
  }
  #mainNav .navbar-menu {
    position: relative; top: 3px; left: 0px; margin: 0; padding: 0; 
    border-bottom: 0px;
    width: 100%;
  }  
}

@media (min-width: 1750px) {
  #mainNav .navbar-brand {
    color: rgba(255, 255, 255, 1);
    font-size: 2.4rem;
    left: 0; margin: 0rem 0rem;
    margin-top: -3px;
    border: 0px;
  }
  #mainNav .navbar-menu {
    position: relative; top: 3px; left: 0px; margin: 0; padding: 0; 
    border-bottom: 0px;
    width: 100%;
  }  
}