Everyday React components with the edge cases handled: FAQ, pricing toggle, code input and more. One file each.
Remembers what each visitor has read: unread dots, a “since your last visit” line, dots that fade as you read, and a mark-all sweep. Releases hang off a measuring-tape rail.
A calm code field with a caret that glides between underlined slots. Digits rise into place, pasted codes stream in, a line runs while checking, and on success the underlines join into one with a check. Optional masking.
The contact form: topic chips with a sliding pill that reshape the fields (Sales adds company and team size) while the card's height glides; company filled from a work email's domain; a reply estimate computed from your business hours in the visitor's time zone plus an online/back status; drafts kept in sessionStorage with Discard; errors in the label row so nothing moves, bad fields shake once; the send folds into a summary with a reference and Send another; failures keep everything.
Accordion with deep links, ⌘F that finds text in closed answers, optional search with highlights, and FAQPage structured data for Google.
npm / pnpm / yarn / bun tabs where only the words that differ change. Every block on the page follows your pick, in a cascade, and remembers it.
Monthly / yearly switch with odometer prices. Drag halfway and prices sit halfway; land on yearly and the badge peels, the old price strikes through.