Choose minimal, normalize-style, or modern, and the tool outputs the matching CSS reset block to paste at the top of your stylesheet.
Minimal removes just margins and box-sizing quirks; normalize-style fixes cross-browser inconsistencies; modern also resets forms, lists, and media elements.
Yes. The output is plain CSS — add it to any stylesheet or CSS-in-JS setup that accepts raw CSS.
Only where selectors or property names match. Check specificity and load order if you see conflicts with existing rules.