discourse/app/assets/stylesheets/common/base/hamburger.scss

#hamburger-menu {
  position: fixed;
  right: 0;
  top: 0;
  background-color: $secondary;
  z-index: 1002;
  height: 100%;
  overflow: auto;
  transition: 0.3s ease-in-out;
  @include transform(translateX(0));

  box-shadow: 4px 0 4px 5px rgba(0,0,0, .25);
  padding: 0.5em 0.5em 0.5em 0.5em;
  width: 300px;

  .close-hamburger {
    float: right;
    color: dark-light-choose(scale-color($header_primary, $lightness: 50%), $header_primary);
    font-size: 1.5em;
    margin-right: 0.1em;
    margin-top: 0.1em;
  }

  ul {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  ul.location-links li, li.heading {
    a {
      padding: 0.5em;
      display: block;
      &:hover {
        background-color: dark-light-diff($highlight, $secondary, 50%, -55%);
      }
    }
  }

  li.category-link {
    float: left;
    background-color: transparent;
    width: 45%;
    margin: 5px 5px 0 8px;
    .box {margin-top: 0;}
    .badge-notification {
      color: dark-light-choose(scale-color($primary, $lightness: 50%), scale-color($secondary, $lightness: 50%));
      background-color: transparent;
      vertical-align: top;
      padding: 5px 5px 2px 5px;
    }
  }

  // note these topic counts only appear for anons in the category hamburger drop down
  b.topics-count {
    color: dark-light-choose(scale-color($primary, $lightness: 50%), scale-color($secondary, $lightness: 50%));
    font-weight: normal;
    font-size: 11px;
  }
}

#hamburger-menu.slideright {
  @include transform(translateX(330px));
}