mastodon/app/javascript/styles/about.scss

.landing-page {
  p,
  li {
    font-family: 'mastodon-font-sans-serif', sans-serif;
    font-size: 16px;
    font-weight: 400;
    font-size: 16px;
    line-height: 30px;
    margin-bottom: 12px;
    color: $ui-primary-color;

    a {
      color: $ui-highlight-color;
      text-decoration: underline;
    }
  }

  em {
    display: inline;
    margin: 0;
    padding: 0;
    font-weight: 500;
    background: transparent;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    color: lighten($ui-primary-color, 10%);
  }

  h1 {
    font-family: 'mastodon-font-display', sans-serif;
    font-size: 26px;
    line-height: 30px;
    font-weight: 500;
    margin-bottom: 20px;
    color: $ui-secondary-color;

    small {
      font-family: 'mastodon-font-sans-serif', sans-serif;
      display: block;
      font-size: 18px;
      font-weight: 400;
      color: $ui-base-lighter-color;
    }
  }

  h2 {
    font-family: 'mastodon-font-display', sans-serif;
    font-size: 22px;
    line-height: 26px;
    font-weight: 500;
    margin-bottom: 20px;
    color: $ui-secondary-color;
  }

  h3 {
    font-family: 'mastodon-font-display', sans-serif;
    font-size: 18px;
    line-height: 24px;
    font-weight: 500;
    margin-bottom: 20px;
    color: $ui-secondary-color;
  }

  h4 {
    font-family: 'mastodon-font-display', sans-serif;
    font-size: 16px;
    line-height: 24px;
    font-weight: 500;
    margin-bottom: 20px;
    color: $ui-secondary-color;
  }

  h5 {
    font-family: 'mastodon-font-display', sans-serif;
    font-size: 14px;
    line-height: 24px;
    font-weight: 500;
    margin-bottom: 20px;
    color: $ui-secondary-color;
  }

  h6 {
    font-family: 'mastodon-font-display', sans-serif;
    font-size: 12px;
    line-height: 24px;
    font-weight: 500;
    margin-bottom: 20px;
    color: $ui-secondary-color;
  }

  ul,
  ol {
    margin-left: 20px;

    &[type='a'] {
      list-style-type: lower-alpha;
    }

    &[type='i'] {
      list-style-type: lower-roman;
    }
  }

  ul {
    list-style: disc;
  }

  ol {
    list-style: decimal;
  }

  li > ol,
  li > ul {
    margin-top: 6px;
  }

  hr {
    border-color: rgba($ui-base-lighter-color, .6);
  }

  .container {
    width: 100%;
    box-sizing: border-box;
    max-width: 800px;
    margin: 0 auto;
  }

  .header-wrapper {
    padding-top: 15px;
    background: $ui-base-color;
    background: linear-gradient(150deg, lighten($ui-base-color, 8%), $ui-base-color);
    position: relative;

    &.compact {
      background: $ui-base-color;
      padding-bottom: 15px;

      .hero .heading {
        padding-bottom: 30px;
        font-family: 'mastodon-font-sans-serif', sans-serif;
        font-size: 16px;
        font-weight: 400;
        font-size: 16px;
        line-height: 30px;
        color: $ui-primary-color;

        a {
          color: $ui-highlight-color;
          text-decoration: underline;
        }
      }
    }

    .mascot-container {
      max-width: 800px;
      margin: 0 auto;
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 100%;
    }

    .mascot {
      position: absolute;
      bottom: -14px;
      width: auto;
      height: auto;
      left: 60px;
      z-index: 3;
    }
  }

  .header {
    line-height: 30px;
    overflow: hidden;

    .container {
      display: flex;
      justify-content: space-between;
    }

    .links {
      position: relative;
      z-index: 4;

      a {
        display: flex;
        justify-content: center;
        align-items: center;
        color: $ui-primary-color;
        text-decoration: none;
        padding: 12px 16px;
        line-height: 32px;
        font-family: 'mastodon-font-display', sans-serif;
        font-weight: 500;
        font-size: 14px;

        &:hover {
          color: $ui-secondary-color;
        }
      }

      .brand {
        a {
          padding-left: 0;
          padding-right: 0;
          color: $white;
        }

        img {
          height: 32px;
          position: relative;
          top: 4px;
          left: -10px;
        }
      }

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

        li {
          display: inline-block;
          vertical-align: bottom;
          margin: 0;

          &:first-child a {
            padding-left: 0;
          }

          &:last-child a {
            padding-right: 0;
          }
        }
      }
    }

    .hero {
      margin-top: 50px;
      align-items: center;
      position: relative;

      .floats {
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;

        div {
          position: absolute;
          transition: all 0.1s linear;
          animation-name: floating;
          animation-iteration-count: infinite;
          animation-direction: alternate;
          animation-timing-function: ease-in-out;
          z-index: 2;
        }

        .float-1 {
          width: 324px;
          height: 170px;
          right: -120px;
          bottom: 0;
          animation-duration: 3s;
          background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 447.1875 234.375" height="170" width="324"><path fill="#{hex-color($ui-base-lighter-color)}" d="M21.69 233.366c-6.45-1.268-13.347-5.63-16.704-10.564-10.705-15.734-1.513-37.724 18.632-44.57l4.8-1.632.173-17.753c.146-14.77.515-19.063 2.2-25.55 6.736-25.944 24.46-46.032 47.766-54.137 11.913-4.143 19.558-5.366 34.178-5.47l13.828-.096V71.12c0-4.755 2.853-17.457 5.238-23.327 8.588-21.137 26.735-35.957 52.153-42.593 23.248-6.07 50.153-6.415 71.863-.923 11.14 2.82 25.686 9.957 33.857 16.615 19.335 15.756 31.82 41.05 35.183 71.275.59 5.305.672 5.435 3.11 4.926 11.833-2.474 30.4-3.132 40.065-1.42 24.388 4.32 40.568 19.076 47.214 43.058 2.16 7.8 3.953 23.894 3.59 32.237l-.24 5.498 5.156 1.317c6.392 1.633 14.55 7.098 18.003 12.062 1.435 2.062 3.305 6.597 4.156 10.078 1.428 5.84 1.43 6.8.04 12.44-1.807 7.318-5.672 13.252-10.872 16.694-8.508 5.63 3.756 5.33-211.916 5.216-108.56-.056-199.22-.464-201.47-.906z"/></svg>');
        }

        .float-2 {
          width: 241px;
          height: 100px;
          right: 210px;
          bottom: 0;
          animation-duration: 3.5s;
          animation-delay: 0.2s;
          background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 536.25 222.1875" height="100" width="241"><path fill="#{hex-color($ui-base-lighter-color)}" d="M42.626 221.23c-14.104-1.174-26.442-5.133-32.825-10.534-4.194-3.548-7.684-10.66-8.868-18.075-1.934-12.102.633-22.265 7.528-29.81 7.61-8.328 19.998-12.76 39.855-14.257l8.47-.638-2.08-6.223c-4.826-14.422-6.357-24.813-6.37-43.255-.012-14.923.28-18.513 2.1-25.724 2.283-9.048 8.483-23.034 13.345-30.1 14.76-21.45 43.505-38.425 70.535-41.65 30.628-3.655 64.47 12.073 89.668 41.673l5.955 6.995 2.765-4.174c1.52-2.296 5.74-6.93 9.376-10.295 18.382-17.02 43.436-20.676 73.352-10.705 12.158 4.052 21.315 9.53 29.64 17.733 12.752 12.562 18.16 25.718 18.19 44.26l.02 10.98 2.312-3.01c15.64-20.365 42.29-20.485 62.438-.28 3.644 3.653 7.558 8.593 8.697 10.976 4.895 10.24 5.932 25.688 2.486 37.046-.76 2.507-1.388 4.816-1.393 5.13-.006.316 6.845.87 15.224 1.234 53.06 2.297 76.356 12.98 81.817 37.526 3.554 15.973-3.71 28.604-19.566 34.02-4.554 1.555-17.922 1.655-234.517 1.757-126.327.06-233.497-.21-238.154-.597z"/></svg>');
        }

        .float-3 {
          width: 267px;
          height: 140px;
          right: 110px;
          top: -30px;
          animation-duration: 4s;
          animation-delay: 0.5s;
          background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 388.125 202.5" height="140" width="267"><path fill="#{hex-color($ui-base-lighter-color)}" d="M181.37 201.458c-17.184-1.81-36.762-8.944-49.523-18.05l-5.774-4.12-8.074 2.63c-11.468 3.738-21.382 4.962-35.815 4.422-14.79-.554-24.577-2.845-36.716-8.594-15.483-7.332-28.498-19.98-35.985-34.968C2.44 128.675-.94 108.435.9 91.356c3.362-31.234 18.197-53.698 43.63-66.074 12.803-6.23 22.384-8.55 37.655-9.122 14.433-.54 24.347.684 35.814 4.42l8.073 2.633 5.635-4.01c24.81-17.656 60.007-23.332 92.914-14.985 10.11 2.565 25.498 9.62 33.102 15.178l5.068 3.704 7.632-2.564c10.89-3.66 21.086-4.916 35.516-4.376 45.816 1.716 76.422 30.03 81.285 75.196 1.84 17.08-1.54 37.32-8.585 51.422-7.487 14.99-20.502 27.636-35.984 34.968-12.14 5.75-21.926 8.04-36.716 8.593-14.43.54-24.626-.716-35.516-4.376l-7.632-2.564-5.068 3.704c-12.844 9.387-32.714 16.488-51.545 18.42-10.607 1.09-13.916 1.08-24.81-.066z"/></svg>');
        }
      }

      .heading {
        position: relative;
        z-index: 4;
        padding-bottom: 150px;
      }

      .simple_form,
      .closed-registrations-message {
        background: darken($ui-base-color, 4%);
        width: 280px;
        padding: 15px 20px;
        border-radius: 4px 4px 0 0;
        line-height: initial;
        position: relative;
        z-index: 4;

        .actions {
          margin-bottom: 0;

          button,
          .button,
          .block-button {
            margin-bottom: 0;
          }
        }
      }

      .closed-registrations-message {
        min-height: 330px;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
      }
    }
  }

  .about-short {
    background: darken($ui-base-color, 4%);
    padding: 50px 0;
    font-family: 'mastodon-font-sans-serif', sans-serif;
    font-size: 16px;
    font-weight: 400;
    font-size: 16px;
    line-height: 30px;
    color: $ui-primary-color;

    a {
      color: $ui-highlight-color;
      text-decoration: underline;
    }
  }

  .information-board {
    background: darken($ui-base-color, 4%);
    padding: 20px 0;

    .container {
      position: relative;
      padding-right: 280px + 15px;
    }

    .information-board-sections {
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
    }

    .section {
      flex: 1 0 0;
      font-family: 'mastodon-font-sans-serif', sans-serif;
      font-size: 16px;
      line-height: 28px;
      color: $primary-text-color;
      text-align: right;
      padding: 10px 15px;

      span,
      strong {
        display: block;
      }

      span {
        &:last-child {
          color: $ui-secondary-color;
        }
      }

      strong {
        font-weight: 500;
        font-size: 32px;
        line-height: 48px;
      }
    }

    .panel {
      position: absolute;
      width: 280px;
      box-sizing: border-box;
      background: darken($ui-base-color, 8%);
      padding: 20px;
      padding-top: 10px;
      border-radius: 4px 4px 0 0;
      right: 0;
      bottom: -40px;

      .panel-header {
        font-family: 'mastodon-font-display', sans-serif;
        font-size: 14px;
        line-height: 24px;
        font-weight: 500;
        color: $ui-primary-color;
        padding-bottom: 5px;
        margin-bottom: 15px;
        border-bottom: 1px solid lighten($ui-base-color, 4%);
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;

        a,
        span {
          font-weight: 400;
          color: darken($ui-primary-color, 10%);
        }

        a {
          text-decoration: none;
        }
      }
    }

    .owner {
      text-align: center;

      .avatar {
        width: 80px;
        height: 80px;
        margin: 0 auto;
        margin-bottom: 15px;

        img {
          display: block;
          width: 80px;
          height: 80px;
          border-radius: 48px;
        }
      }

      .name {
        font-size: 14px;

        a {
          display: block;
          color: $primary-text-color;
          text-decoration: none;

          &:hover {
            .display_name {
              text-decoration: underline;
            }
          }
        }

        .username {
          display: block;
          color: $ui-primary-color;
        }
      }
    }
  }

  .features {
    padding: 50px 0;

    .container {
      display: flex;
    }

    #mastodon-timeline {
      display: flex;
      -webkit-overflow-scrolling: touch;
      -ms-overflow-style: -ms-autohiding-scrollbar;
      font-family: 'mastodon-font-sans-serif', sans-serif;
      font-size: 13px;
      line-height: 18px;
      font-weight: 400;
      color: $primary-text-color;
      width: 330px;
      margin-right: 30px;
      flex: 0 0 auto;
      background: $ui-base-color;
      overflow: hidden;
      box-shadow: 0 0 6px rgba($black, 0.1);

      .column-header {
        color: inherit;
        font-family: inherit;
        font-size: 16px;
        line-height: inherit;
        font-weight: inherit;
        margin: 0;
        padding: 15px;
      }

      .column {
        padding: 0;
        border-radius: 4px;
        overflow: hidden;
      }

      .scrollable {
        height: 400px;
      }

      p {
        font-size: inherit;
        line-height: inherit;
        font-weight: inherit;
        color: $primary-text-color;
        margin-bottom: 20px;

        &:last-child {
          margin-bottom: 0;
        }

        a {
          color: $ui-secondary-color;
          text-decoration: none;
        }
      }
    }

    .about-mastodon {
      max-width: 675px;

      p {
        margin-bottom: 20px;
      }

      .features-list {
        margin-top: 20px;

        .features-list__row {
          display: flex;
          padding: 10px 0;
          justify-content: space-between;

          &:first-child {
            padding-top: 0;
          }

          .visual {
            flex: 0 0 auto;
            display: flex;
            align-items: center;
            margin-left: 15px;

            .fa {
              display: block;
              color: $ui-primary-color;
              font-size: 48px;
            }
          }

          .text {
            font-size: 16px;
            line-height: 30px;
            color: $ui-primary-color;

            h6 {
              font-size: inherit;
              line-height: inherit;
              margin-bottom: 0;
            }
          }
        }
      }
    }
  }

  .extended-description {
    padding: 50px 0;
    font-family: 'mastodon-font-sans-serif', sans-serif;
    font-size: 16px;
    font-weight: 400;
    font-size: 16px;
    line-height: 30px;
    color: $ui-primary-color;

    a {
      color: $ui-highlight-color;
      text-decoration: underline;
    }
  }

  .footer-links {
    padding-bottom: 50px;
    text-align: right;
    color: $ui-base-lighter-color;

    p {
      font-size: 14px;
    }

    a {
      color: inherit;
      text-decoration: underline;
    }
  }

  @media screen and (max-width: 840px) {
    .container {
      padding: 0 20px;
    }

    .information-board {

      .container {
        padding-right: 20px;
      }

      .section {
        text-align: center;
      }

      .panel {
        position: static;
        margin-top: 20px;
        width: 100%;
        border-radius: 4px;

        .panel-header {
          text-align: center;
        }
      }
    }

    .header-wrapper .mascot {
      left: 20px;
    }
  }

  @media screen and (max-width: 689px) {
    .header-wrapper .mascot {
      display: none;
    }
  }

  @media screen and (max-width: 675px) {
    .header-wrapper {
      padding-top: 0;

      &.compact .hero .heading {
        padding-bottom: 20px;
        text-align: initial;
      }
    }

    .header .container,
    .features .container {
      display: block;
    }

    .header {

      .links {
        padding-top: 15px;
        background: darken($ui-base-color, 4%);

        a {
          padding: 12px 8px;
        }

        .nav {
          display: flex;
          flex-flow: row wrap;
          justify-content: space-around;
        }

        .brand img {
          left: 0;
          top: 0;
        }
      }

      .hero {
        margin-top: 30px;
        padding: 0;

        .floats {
          display: none;
        }

        .heading {
          padding: 30px 20px;
          text-align: center;
        }

        .simple_form,
        .closed-registrations-message {
          background: darken($ui-base-color, 8%);
          width: 100%;
          border-radius: 0;
          box-sizing: border-box;
        }
      }
    }

    .features #mastodon-timeline {
      height: 70vh;
      width: 100%;
      margin-bottom: 50px;
    }
  }
}

@keyframes floating {
  from {
    transform: translate(0, 0);
  }

  65% {
    transform: translate(0, 4px);
  }

  to {
    transform: translate(0, -0);
  }
}