/* @media (prefers-color-scheme: dark) {
  body {
    background-color: gray;
  }

  .panel {
    background-color: darkgray;
  }

  .navbar-default {
    background-color: darkgray;
  }

  .navbar-default .navbar-nav > .active > a {
    background-color: gray;
    color: darkgray;
  }
} */