simoncor.net/public/assets/css/navbar.css

.top-navbar {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 50px;
  z-index: 99999;
  transition: all 0.4s ease-out;
  -webkit-transition: all 0.4s ease-out;
  margin: 0;
  padding-top: 0.1rem;
  text-align: center;
}

/* --- initial state start ------ */

.initial-navbar {
  background-color: transparent;
}

.initial-navbar .navbar-brand {
  color: #c0ccda;
  font-weight: 600;
}

.initial-navbar li a {
  color: #c0ccda;
}

.initial-navbar .navbar-nav .active,
.initial-navbar li a:hover {
  color: #f9fafc;
  transition: all 0.3s ease-out;
  -webkit-transition: all 0.3s ease-out;
}

.navbar-collapse {
  margin-top: -5px;
}

.navbar-collapse.show,
.navbar-collapse.collapsing {
  background-color: #f9fafc;
  padding-left: 1rem;
}

/* --- initial state end ------ */

/* --- state after scroll start --- */

.final-navbar {
  background-color: #f9fafc;
  color: #1c2d41;
  transition: all 0.3s ease-out;
  -webkit-transition: all 0.3s ease-out;
}

.final-navbar .navbar-brand {
  color: #1c2d41;
  font-weight: 600;
}

.final-navbar li a {
  color: #1c2d41;
  font-weight: 500;
  transition: all 0.3s ease-out;
  -webkit-transition: all 0.3s ease-out;
  border-bottom: 2px solid#F9FAFC;
}

.final-navbar .navbar-nav .active,
.final-navbar li a:hover {
  color: #2098d1;
  transition: all 0.3s ease-out;
  -webkit-transition: all 0.3s ease-out;
  border-bottom: 2px solid #2098d1;
  background: rgb(2, 0, 36);
  background: linear-gradient(
    90deg,
    rgba(2, 0, 36, 1) 0%,
    rgba(34, 136, 168, 0.1) 0%
  );
}

.navbar-collapse.show li a,
.navbar-collapse.collapsing li a {
  color: #1c2d41;
  font-weight: 500;
  transition: all 0.3s ease-out;
  -webkit-transition: all 0.3s ease-out;
}

.navbar-collapse.show .navbar-nav .active,
.navbar-collapse.show .navbar-nav a:hover {
  color: #2098d1;
}

#top-navbar-divider {
  margin-top: 10px;
}

/* --- state after scroll end --- */

#top-navbar-divider {
  background: rgba(192, 204, 218, 0.8);
  height: 20px;
  width: 2px;
}

.final-navbar #top-navbar-divider {
  background: rgba(0, 0, 0, 0.6);
}

#top-navbar-divider {
  height: 20px;
  width: 2px;
}

.navbar-brand img {
  width: 42px;
  padding: 5px;
  margin-left: -10px;
}

/* ============= Device specific fixes ======= */

/* Extra small devices (portrait phones, less than 576px) */

/* No media query for `xs` since this is the default in Bootstrap */

/* Extra large devices (large desktops, 1200px and up) */

@media (max-width: 1400px) {
}

@media (max-width: 1200px) {
}

/*  Large devices (desktops, 992px and up) */

@media (max-width: 992px) {
}

/* Medium devices (tablets, 768px and up) */

@media only screen and (max-width: 768px) {
  .top-navbar .container {
    max-width: 100%;
    padding: 0;
  }

  .initial-navbar .navbar-nav .active,
  .initial-navbar li a:hover {
    color: #2098d1;
    transition: all 0.3s ease-out;
    -webkit-transition: all 0.3s ease-out;
  }

  .final-navbar .navbar-nav .active,
  .final-navbar li a:hover {
    color: #2098d1;
    transition: none;
    -webkit-transition: none;
    border-bottom: none;
    background: transparent;
  }

  .final-navbar li a {
    border-bottom: none;
  }

  .final-navbar .navbar-collapse.show {
    box-shadow: 5px 10px 10px rgba(192, 204, 218, 0.3);
    transition: all 0.3s ease-out;
    -webkit-transition: all 0.3s ease-out;
  }

  .dropdown-divider {
    border-top: 1px solid #c0ccda;
  }
  #top-navbar-divider {
    background: rgba(0, 0, 0, 0.6);
    height: auto;
    width: auto;
    margin-right: 15px;
  }
}

/* Small devices (landscape phones, 576px and up) */

@media only screen and (max-width: 576px) {
}