Or, given that OP is presumably a developer who just doesn't focus fully on front end code they could skip straight to checking MDN for "center div" and get a How To article (https://developer.mozilla.org/en-US/docs/Web/CSS/How_to/Layo...) as the first result without relying on spicy autocomplete.

Given how often people acknowledge that ai slop needs to be verified, it seems like a shitty way to achieve something like this vs just checking it yourself with well known good reference material.