istio.io/_sass/modules/_footer.scss

// Footer
footer {
  background-color: $footerColor;
  box-shadow: 0px 500px 0px 500px $footerColor;
  color: $white;
  overflow: hidden;
  padding: 35px 0 0px;
  position: relative;

  @media (max-width: 767px) {
    padding: 35px 0 120px;

    ul {
      li {
        display: none;
      }

      &.active li {
        display: initial;
      }
    }
  }

  a {
    color: $white;

    &:hover {
      text-decoration: underline;
      color: $white;
    }

    &::after {
      display: none;
    }
  }

  a.external:after {
    display: none;
  }

  .active {
    display: initial;
  }

  .footer-logo {
    width: 75px;
    margin-left: -8px;
    padding: 0 0 10px 0;

    @media (min-width: 768px) {
      padding: 0 0 20px 0;
    }
  }

  .left-links {
    color: $footerText;
    display: block;
    position: absolute;
    bottom: 0;
    margin: 60px 15px;
    text-align: left;
    width: 100%;

    p {
      font-weight: 200;
      font-size: .8em;
    }

    @media (min-width: 768px) {
      position: relative;
      margin: 0 auto;
      text-align: left;
      display: inline-block;
      width: 39%;
    }

    @media (min-width: 1025px) {
      width: 35%;
      margin-left: 5%;
    }

    .description {
      @media (min-width: 768px) {
        padding-top: 9px;
      }
    }

  }

  .right-links {
      width: 100%;
      display: table;
      margin: 0 0 60px 0;

    & > div {
      padding-bottom: 10px;
    }

    @media (min-width: 768px) {
      padding: 0 0 0 35px;
      margin: 0 0 10px 0;
    }

    p {
      font-weight: 200;
      font-size: .8em;
      padding: 0px;
      letter-spacing: .5px;
      line-height: 16px;
    }

    .right-link-headers  {
      font-weight: 400;
      font-size: 1em;
      letter-spacing: .5px;
      cursor: pointer;
      padding: 15px 0;
      position: relative;

        &:after {
          content: '';
          background: url('../img/caret.svg') no-repeat center/cover;
          background-size: contain;
          height: 45px;
          width: 35px;
          position: absolute;
          right: 0;
          top: 5px;
          cursor: pointer;
        }
    }

    @media (min-width: $tablet) {
      padding: 0;
      display: inline-block;
      width: 58%;
      vertical-align: top;

      .right-link-headers {
        padding: 13px 0 14px;
        line-height: 1em;

        &:after {
          content: none;
        }
      }
    }

    @media (min-width: 1025px) {
      width: 55%;
    }
  }

  .footer-sections {
    display: block;
    width: 120%;
    margin: 10px -15px;
    background-color: rgba(234,234,234,0.1);
    color: rgba(234,234,234,0.1);
    border: none;
    height: 1px;

    @media (min-width: 768px) {
      display: none;
    }
  }

  .footer-community p {
    padding: 7px 0;

    @media(min-width: 990px) {
      padding: 1px 0;
    }
  }

  @mixin social-icon($image-url) {
    &::before {
      content: '';
      display: inline-block;
      background: url($image-url) no-repeat center/cover;
      width: 35px;
      height: 35px;
      vertical-align: middle;
      margin: 0 15px 0 0;
    }
  }

  .github {
    @include social-icon('../img/icon_github.svg');
  }

  .group {
    @include social-icon('../img/group.png');
  }

  .google {
    @include social-icon('../img/icon_google-plus.svg');
  }

  .twitter {
    @include social-icon('../img/icon_twitter.svg');
  }

  .stack-overflow {
    @include social-icon('../img/stackoverflow.png');
  }

  .slack {
    @include social-icon('../img/slack.png');
  }

  .youtube {
    @include social-icon('../img/icon_youtube.svg');
  }
}