.headt {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: #222;

  /* This makes the font size scale smoothly between 24px and 64px */
  font-size: clamp(1.5rem, 5vw + 1rem, 4rem);
}