mastodon-docker-playground/app/javascript/styles/about.scss

.about-body {
  .wrapper {
    max-width: 600px;
    margin: 0 auto;
    color: $ui-primary-color;
    padding-top: 50px;
    padding-bottom: 50px;

    &.thicc {
      max-width: 800px;
    }
  }

  h1 {
    font: 46px/52px 'mastodon-font-sans-serif', sans-serif;
    font-weight: 600;
    margin-bottom: 20px;
    color: $ui-highlight-color;
    padding: 20px 0;

    img {
      margin-bottom: -5px;
      margin-right: 5px;
      width: 46px;
      height: 46px;
    }
  }

  h2 {
    font-family: 'mastodon-font-display', sans-serif;
    font-size: 24px;
    line-height: 28px;
    font-weight: 400;
    margin-bottom: 20px;
    color: $primary-text-color;
  }

  h3 {
    font-family: 'mastodon-font-display', sans-serif;
    font-size: 20px;
    line-height: 28px;
    font-weight: 400;
    margin-bottom: 20px;
    color: $ui-secondary-color;
  }

  ul,
  ol {
    list-style: inherit;
    margin-left: 20px;

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

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

  li > ol,
  li > ul {
    margin-top: 20px;
  }

  p,
  li {
    font: 16px/28px 'mastodon-font-sans-serif', sans-serif;
    font-weight: 400;
    margin-bottom: 12px;

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

  em {
    display: inline-block;
    padding: 7px 7px 5px;
    margin: 0 2px;
    background: $ui-primary-color;
    color: $ui-base-color;
    font: 16px/16px 'mastodon-font-sans-serif', sans-serif;
    font-weight: 300;
  }

  .screenshot {
    box-shadow: 0 0 15px rgba($base-shadow-color, 0.4);
    margin-bottom: 26px;

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
  }

  .actions {
    overflow: hidden;
    margin-bottom: 20px;

    .info {
      float: right;
      text-align: right;
      line-height: 36px;

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

  @media screen and (max-width: 625px) {
    .wrapper {
      padding: 20px;
    }

    .features-list {
      display: block;
    }
  }
}

.information-board {
  margin: 20px 0;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid lighten($ui-base-color, 10%);
  border-bottom: 1px solid lighten($ui-base-color, 10%);
  padding-right: 14px;

  .section {
    flex: 1 0 0;
    padding: 14px;
    text-align: right;
    font: 16px/28px 'mastodon-font-sans-serif', sans-serif;

    span,
    strong {
      display: block;
    }

    span {
      font-size: 16px;

      &:last-child {
        color: $ui-secondary-color;
        font-size: 14px;
      }
    }

    strong {
      font-weight: 500;
      font-size: 32px;
      line-height: 48px;
      color: $primary-text-color;
    }
  }

  @media screen and (max-width: 500px) {
    flex-direction: column;

    .section {
      text-align: left;
    }
  }
}

.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;
    }
  }
}

.contact-email {
  text-align: center;
  margin: 40px 0;

  strong {
    display: block;
    color: $primary-text-color;
    word-break: break-word;
  }
}

.sidebar-layout {
  display: flex;

  .main {
    flex: 1 1 auto;
    padding: 14px 0;

    .panel {
      padding-right: 14px;
    }
  }

  .sidebar {
    border-left: 1px solid lighten($ui-base-color, 10%);
    width: 200px;
    flex: 0 0 auto;
  }

  .panel {
    .panel-header {
      background: lighten($ui-base-color, 10%);
      padding: 7px 14px;
      text-transform: uppercase;
      font-size: 12px;
      font-weight: 500;
    }

    .panel-body {
      padding: 14px;
    }

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

        li {
          margin: 0;
          font-family: inherit;
          font-size: 13px;
          line-height: 18px;

          a {
            display: block;
            padding: 7px 14px;
            color: rgba($primary-text-color, 0.7);
            text-decoration: none;
            transition: all 200ms linear;

            i.fa {
              margin-right: 5px;
            }

            &:hover {
              color: $primary-text-color;
              background-color: darken($ui-base-color, 5%);
              transition: all 100ms linear;
            }

            &.selected {
              color: $primary-text-color;
              background-color: $ui-highlight-color;

              &:hover {
                background-color: lighten($ui-highlight-color, 5%);
              }
            }
          }
        }
      }
    }
  }

  @media screen and (max-width: 625px) {
    flex-direction: column;

    .sidebar {
      border: 1px solid lighten($ui-base-color, 10%);
      width: auto;
    }
  }
}

.features-list {
  display: flex;
  margin-bottom: 20px;

  .features-list__column {
    flex: 1 1 0;

    ul {
      list-style: none;
    }

    li {
      margin: 0;
    }
  }
}

.screenshot-with-signup {
  display: flex;
  margin-bottom: 20px;

  .mascot {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;

    img {
      display: block;
      margin: 0 auto;
      max-width: 100%;
      height: auto;
    }
  }

  .simple_form,
  .closed-registrations-message {
    width: 300px;
    flex: 0 0 auto;
    background: rgba(darken($ui-base-color, 7%), 0.5);
    padding: 14px;
    border-radius: 4px;
    box-shadow: 0 0 15px rgba($base-shadow-color, 0.4);

    .actions {
      margin-bottom: 0;
    }

    .info {
      text-align: center;

      a {
        color: $ui-secondary-color;
      }
    }
  }

  @media screen and (max-width: 625px) {
    .mascot {
      display: none;
    }

    .simple_form,
    .closed-registrations-message {
      flex: auto;
    }
  }
}

.closed-registrations-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}