Align collection list

I am having some strange issue where im not able to align collection list wrapper, or the objects within it.

Collection list wrapper is aligned to the left, rather than center.

Cannot place button to be aligned at bottom of collection list item.

https://preview.webflow.com/preview/parallax-av-design?utm_medium=preview_link&utm_source=designer&utm_content=parallax-av-design&preview=24421ccadff8a7c80d1e3e996b7bc77b&pageId=65d3dd0398a956eaa94afdf9&itemId=65daac2a0bca11cd03f98a73&workflow=preview

You are using 4 columns, with a gap. Use this approach instead;