crbtc.org/assets/style/pages/_404.scss

.lost {
  position: relative;
  top: calc(50vh - 280px);
  margin: auto;
  text-align: center;

  h3 {
    color: $fs-color;
    font-size: 8rem;
    font-weight: 700;
    line-height: 8.5rem;
    padding: 0;
  }

  h4 {
    color: $fs-color;
    font-size: 1.5rem;
    font-weight: 700;
    padding: .25rem 0;
  }

  a {
    display: inline-block;
    color: $link;

    &:hover { text-decoration: underline }
  }
}