styles.css

:root {
  --color-blue: #0190DB;
  --color-gray: #1A1917;
  --color-black: #030303;
}

body {
  color: #ffffff;
  background-color: var(--color-gray);
  font-size: 14pt;
}

h2 {
  font-size: 20pt;
}

a {
  color: var(--color-blue);
  text-decoration: none;
}

a:hover {
  color: var(--color-blue);
}

.navbar-default {
  background-color: var(--color-black);
}

.navbar-default .navbar-nav>.active>a, .navbar-default .navbar-nav>.active>a:hover, .navbar-default .navbar-nav>.active>a:focus, .navbar-nav>.open>a, .navbar-default .navbar-nav>.open>a:hover, .navbar-default .navbar-nav>.open>a:focus {
  background-color: var(--color-gray);
}

.navbar-default .navbar-nav>li>a:hover, .navbar-default .navbar-nav>li>a:focus, .navbar-default .navbar-brand:hover, .navbar-default .navbar-brand:focus {
  color: var(--color-blue);
}

.dropdown-menu>li>a:hover, .dropdown-menu>li>a:focus, .dropdown-menu>.active>a, .dropdown-menu>.active>a:hover, .dropdown-menu>.active>a:focus {
  background-color: var(--color-black);
}

.dropdown-menu>li>a {
    color: #ffffff;
}