It's shorthand: https://developer.mozilla.org/en-US/docs/Web/CSS/place-items https://developer.mozilla.org/en-US/docs/Web/CSS/place-items MDN also has a list o

It's shorthand: https://developer.mozilla.org/en-US/docs/Web/CSS/place-items https://developer.mozilla.org/en-US/docs/Web/CSS/place-items MDN also has a list of shorthand properties if someone didn't know what 'shorthand property' really meant: https://developer.mozilla.org/en-US/docs/Web/CSS/Shorthand_properties https://developer.mozilla.org/en-US/docs/Web/CSS/Shorthand_p... But yeah, the discoverability or suggestion-to-refactor-something-to-shorthand is typically non-existent in CSS. Lists like these are really the only way I discover CSS stuff.