github.io/assets/main.scss

h1,h2,h3,h4,h5,h6 {
  @extend %headings !optional;
}

body {
  background-color: rgb(18, 20, 21);
  color: lime;
}

footer {
  padding: 1rem 3rem;
}

#content {
  main {
    background-color: rgb(24, 26, 27);
    margin: 3% 10%;
    padding: 3%;
  }
  a:hover %headings {
    text-decoration: underline;
    color: cyan;
  }
  a {
    text-decoration: none;
    color: cyan;
  }
  a li {
    color: lime;
  }
}

#navbar {
  background-color: #222;
  li a:hover {
    background-color: #333;
  }
  .link-group li {
    float: right;
  }
  li {
    display: inline;
    float: left;
  }
  ul {
    list-style-type: none;
    overflow: hidden;
    padding: 0;
    margin: 0;
  }
  a {
    text-decoration: none;
    text-align: center;
    padding: 14px 16px;
    display: block;
    color: lime;
  }
}

#lang-menu {
  ul {
    background-color: #222;
    position: absolute;
    display: none;
    z-index: 1;
  }
  a {
    display: block;
  }
}
#lang-menu:hover ul {
  display: block;
}