Overleaf/services/web/frontend/stylesheets/bootstrap-5/components/footer.scss

footer.site-footer {
  background-color: var(--bg-light-primary);
  border-top: 1px solid var(--border-primary-dark);
  position: absolute;
  bottom: 0;
  width: 100%;

  @include body-sm;

  height: $footer-height;

  ul {
    list-style: none;
    margin: var(--spacing-00);

    li {
      display: inline-block;
      margin: var(--spacing-07) var(--spacing-04);
    }

    i {
      font-size: var(--font-size-05);
    }
  }

  li.lngOption {
    text-align: left;
    display: list-item;

    img {
      vertical-align: text-bottom;
    }

    a:hover,
    a:focus {
      color: var(--content-primary-dark);

      &:visited {
        color: var(--content-primary-dark);
      }
    }
  }

  a {
    color: var(--content-secondary-dark);

    &:hover,
    &:focus {
      color: var(--content-secondary-dark);
    }
  }
}

.site-footer-content {
  @extend .container-fluid;
}

.sprite-icon-lang {
  display: inline-block;
  vertical-align: middle;
}

.fat-footer {
  background: var(--bg-dark-primary);
  color: var(--content-secondary-dark);
  display: flex;
  flex-direction: column;

  .fat-footer-container {
    margin: var(--spacing-11) auto;

    @include media-breakpoint-down(sm) {
      margin: var(--spacing-11) 0;
    }
  }

  a {
    color: var(--content-secondary-dark);
    text-decoration: none;

    &:hover {
      color: var(--content-secondary-dark);
      text-decoration: underline;
    }

    &:visited {
      color: var(--content-secondary-dark);
    }
  }

  .footer-brand-container {
    flex: 1;
  }

  .fat-footer-sections {
    display: grid;
    column-gap: var(--spacing-07);
    padding: 0 var(--spacing-07) var(--spacing-07);
  }

  .footer-brand {
    display: block;
    height: 37px;
    width: 130px;
    background-image: url('../../../../public/img/ol-brand/overleaf-white.svg');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: left center;
  }

  .footer-section-heading {
    color: var(--content-secondary-dark);

    @include heading-sm;

    margin-bottom: var(--spacing-07);
    margin-top: var(--spacing-07);
  }

  .footer-section ul {
    @include body-sm;
  }

  .footer-section li {
    padding-bottom: var(--spacing-04);
  }

  #footer-brand {
    grid-column: 1/-1;
    margin-top: var(--spacing-07);
  }

  .fat-footer-base {
    color: var(--content-disabled);

    @include body-sm;

    #language-picker-toggle {
      color: var(--content-secondary-dark);
    }

    .fat-footer-base-meta a:not(.dropdown-toggle) {
      color: inherit;
    }

    .language-picker .dropdown-menu {
      .dropdown-header {
        display: none; /* hiding rather than removing as still needed in the thin footer */
      }

      .dropdown-item {
        &.active {
          color: var(--green-70);
        }

        &:hover {
          text-decoration: none;
        }
      }
    }
  }

  .fat-footer-base-item {
    display: flex;
    white-space: nowrap;
  }

  @include media-breakpoint-down(md) {
    .fat-footer-sections {
      grid-template-columns: repeat(2, 1fr);
      grid-template-rows: repeat(4, auto);
    }

    .fat-footer-base {
      display: flex;
      flex-direction: column;
      align-items: center;

      .fat-footer-base-section {
        display: flex;
        align-items: center;
      }

      .fat-footer-base-social {
        order: 1;
      }

      .fat-footer-base-meta {
        display: flex;
        flex-direction: column-reverse;
        align-items: center;
        order: 2;
      }

      .fat-footer-base-item {
        flex-wrap: wrap;
        padding: var(--spacing-02);
        margin: var(--spacing-06);
      }

      .fat-footer-base-meta .fat-footer-base-item {
        gap: var(--spacing-09);
        justify-content: center;

        @include media-breakpoint-down(sm) {
          gap: var(--spacing-06);
        }
      }

      .fat-footer-base-social .fat-footer-base-item {
        gap: var(--spacing-07);
        margin-top: var(--spacing-00);
      }

      .fat-footer-social {
        @include heading-lg;
      }

      .fat-footer-base-copyright {
        order: 2;
      }
    }
  }

  @include media-breakpoint-up(md) {
    .fat-footer-container {
      width: (map-get($grid-breakpoints, 'md') - ($spacing-04 * 2));
    }

    #footer-brand {
      grid-column: auto;
      grid-row: 1/-1;
    }

    .fat-footer-sections {
      grid-template-columns: repeat(4, 1fr);
      grid-template-rows: repeat(2, auto);
    }

    .footer-section:last-of-type {
      grid-column: 4;
    }

    .fat-footer-base {
      display: flex;
      justify-content: space-between;
      margin: var(--spacing-07) auto;

      .fat-footer-base-section {
        display: flex;
        align-items: center;
      }

      .fat-footer-base-item {
        padding: var(--spacing-02);
        margin: var(--spacing-02);
      }

      .fat-footer-base-meta .fat-footer-base-item {
        gap: var(--spacing-07);
      }

      .fat-footer-social {
        margin: var(--spacing-07) var(--spacing-02);

        @include heading-lg;
      }
    }
  }

  @include media-breakpoint-up(lg) {
    .fat-footer-container {
      width: (map-get($grid-breakpoints, 'lg') - $spacing-07);
    }

    .fat-footer-sections {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  @include media-breakpoint-up(xl) {
    .fat-footer-container {
      width: (map-get($grid-breakpoints, 'xl') - $spacing-09);
    }

    .fat-footer-sections {
      grid-template-columns: repeat(6, 1fr);
      grid-template-rows: auto;
    }

    .footer-section:last-of-type {
      grid-column: 6;
    }
  }
}

.cookie-banner {
  @include body-sm;

  padding: var(--spacing-05) var(--spacing-07);
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  color: var(--content-secondary);
  background: var(--bg-light-secondary);
  box-shadow: 0px -5px 8px 0px #0000001a;

  .cookie-banner-actions {
    padding-top: var(--spacing-04);
  }

  @include media-breakpoint-up(md) {
    align-items: center;
    display: flex;
    flex-wrap: wrap;

    .cookie-banner-content {
      flex: 1;
    }

    .cookie-banner-actions {
      flex-shrink: 0;
      white-space: nowrap;
      padding-top: var(--spacing-00);
    }
  }
}

.website-redesign-fat-footer {
  .fat-footer-container {
    @include media-breakpoint-down(sm) {
      margin: var(--spacing-11) 0;
    }
  }

  &.fat-footer {
    background: var(--content-primary-dark);
    color: var(--content-primary);

    a {
      color: var(--content-primary);

      &:visited {
        color: var(--content-primary);
      }
    }

    .footer-section-heading {
      color: var(--content-primary);
    }

    h2 {
      font-weight: 400;
    }

    .fat-footer-base {
      color: var(--content-primary);
    }
  }

  .footer-brand {
    background-image: url('../../../../public/img/ol-brand/overleaf-black.svg');
  }

  @include media-breakpoint-down(sm) {
    .fat-footer-sections {
      grid-template-columns: repeat(1, 1fr);
      grid-template-rows: repeat(6, auto);
    }
  }
}