/* ══ grid-column ═══════════════════════════════════════════════════════════ */
/* grid-column = <grid-line> [ / <grid-line> ]? */

/* single value */
an { grid-column: auto }
ao { grid-column: 1 }
ap { grid-column: col-start }
aq { grid-column: span 2 }

/* two-value (start / end) */
ar { grid-column: 1 / 3 }
as { grid-column: 1 / auto }
at { grid-column: auto / 3 }
au { grid-column: col-start / col-end }
av { grid-column: 1 / span 2 }
aw { grid-column: span 1 / span 2 }
ax { grid-column: 2 / -1 }
ay { grid-column: col-start / 4 }