Squarespace CSS Selectors Library for Website Designers

This Squarespace selector library is a reference for styling every major block type in Squarespace 7.1, including Fluid Engine sections, galleries, lists, buttons, forms, video, accordion, map, newsletter, and commerce blocks. It documents real front end classes, common states, and reliable targeting patterns so you can ship custom CSS faster, keep styles consistent across pages, and debug layout issues without guesswork.