/* Single track sizes */
a  { grid-auto-columns: auto }
b  { grid-auto-columns: 100px }
c  { grid-auto-columns: 1fr }
d  { grid-auto-columns: 50% }
e  { grid-auto-columns: min-content }
f  { grid-auto-columns: max-content }

/* minmax() */
g  { grid-auto-columns: minmax(100px, 1fr) }
h  { grid-auto-columns: minmax(min-content, auto) }
i  { grid-auto-columns: minmax(0px, max-content) }

/* fit-content() */
j  { grid-auto-columns: fit-content(200px) }
k  { grid-auto-columns: fit-content(30%) }

/* Multiple track sizes (+ multiplier) */
l  { grid-auto-columns: 100px 200px }
m  { grid-auto-columns: 1fr auto }
n  { grid-auto-columns: minmax(100px, 1fr) auto }
o  { grid-auto-columns: 100px auto 1fr }

/* ── CSS-wide keywords ────────────────────────────────────────────────────── */

y  { grid-auto-columns: inherit }
z  { grid-auto-columns:    initial }