article {
    scroll-snap-type: y proximity;
    /* Reserve space for header plus some extra space for sneak peeking. */
    scroll-padding-top: 15vh;
    /* -y: scroll; */
  }
  section {
    /* Snap align start. */
    scroll-snap-align: start;
  }
  header {
    position: fixed;
    height: 10vh;
  }