soapbox/app/styles/components/dropdown-menu.scss

.dropdown-menu {
  @include font-size(13);
  @include line-height(26);
  @include font-weight(normal);
  z-index: 9999;
  position: absolute;
  background: var(--background-color);
  border-radius: 6px;
  padding: 4px 0;
  color: var(--primary-text-color);
  box-shadow: 0 0 6px 0 rgba(0, 0, 0, 0.5);
  &.left {transform-origin: 100% 50%;}
  &.top {transform-origin: 50% 100%;}
  &.bottom {transform-origin: 50% 0;}
  &.right {transform-origin: 0 50%;}

  &__arrow {
    position: absolute;
    width: 0;
    height: 0;
    border: 0 solid transparent;

    &.left {
      right: -5px;
      margin-top: -5px;
      border-width: 5px 0 5px 5px;
      border-left-color: var(--background-color);
    }

    &.top {
      bottom: -5px;
      margin-left: -5px;
      border-width: 5px 5px 0;
      border-top-color: var(--background-color);
    }

    &.bottom {
      top: -5px;
      margin-left: -5px;
      border-width: 0 5px 5px;
      border-bottom-color: var(--background-color);
    }

    &.right {
      left: -5px;
      margin-top: -5px;
      border-width: 5px 5px 5px 0;
      border-right-color: var(--background-color);
    }
  }

  ul {
    overflow: hidden;
    padding: 6px 0;
  }

  &__item a {
    display: block;
    box-sizing: border-box;
    overflow: hidden;
    padding: 3px 10px 1px;
    text-decoration: none;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-transform: capitalize;
    color: var(--primary-text-color);

    &:focus,
    &:hover,
    &:active {
      outline: 0;
      color: #fff;
      background: var(--brand-color) !important;
    }
  }

  &__separator {
    display: block;
    margin: 10px !important;
    height: 1px;
    background: var(--foreground-color);
  }
}
// end .dropdown-menu




// NOTE - not sure what this relates to — but it doesn't involve the navbar dropdown


.dropdown {
  display: inline-block;
}

.dropdown__content {
  display: none;
  position: absolute;
}


.dropdown--active .dropdown__content {
  display: block;
  line-height: 18px;
  max-width: 311px;
  right: 0;
  text-align: left;
  z-index: 9999;

  & > ul {
    list-style: none;
    background: var(--background-color);
    padding: 4px 0;
    border-radius: 4px;
    box-shadow: 0 0 15px rgba($base-shadow-color, 0.4);
    min-width: 140px;
    position: relative;
  }

  &.dropdown__right {
    right: 0;
  }

  &.dropdown__left {
    & > ul {
      left: -98px;
    }
  }

  & > ul > li > a {
    font-size: 13px;
    line-height: 18px;
    display: block;
    padding: 4px 14px;
    box-sizing: border-box;
    text-decoration: none;
    background: var(--background-color);
    color: var(--primary-text-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;

    &:focus {
      outline: 0;
    }

    &:hover {
      background: var(--brand-color);
      color: var(--primary-text-color--faint);
    }
  }
}

.dropdown__icon {
  vertical-align: middle;
}