message: refactor(app): calcheck: update intro screen content
  Updates intro screen content from new designs. Tweaks the size of the
  tiprack images down a bit to avoid scrollbars.
diff: color: var(--c-error);
  }
  +.calcheck_intro_div {
  + margin-top: 2rem;
  + display: flex;
  + flex-direction: column;
  + align-items: flex-start;
  + position: relative;
  +}
  +
  +.intro_header {
  + @apply --modal-contents;
  +
  + font-weight: bold;
  + margin-bottom: 1rem;
  + font-size: var('--fs-body-2');
  +}
  +
  +.intro_content {
  + @apply --modal-contents;
  +
  + margin-bottom: 1rem;
  + font-size: var('--fs-body-2');
  +}
  +
  .modal_header {
  display: flex;
  text-transform: uppercase;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  - height: 15rem;
  + height: 8rem;
  }
  .tiprack_image {
  - width: 100%;
  + height: 100%;
  max-height: 15rem;
  max-width: 15.25rem;
  }
  