Theme for very basic listing/catalogue site.

I’m looking for a theme that is well-suited to making a search-focused (i.e. big search bar in the center of the homepage) catalogue/directory site. It isn’t a true listing/directory site (i.e. not listing buisnesses or products, just a catologue of items for reference; no need for map/directory integration; no need for users to “add a listing”, etc). Similar to this site’s functionality. Preferably suitable for a VERY unskilled/beginner designer (i.e. not a pro, no coding ability, etc.) The simpler, the better!

Thanks for your recommendations!