Does .css exist?
No. No — .css is a stylesheet file extension, not a domain extension.
The full story
No .css TLD exists or has been applied for. If you've seen something.css in the wild, it was a file path or a subdomain trick.
What to use instead
.design — The portfolio TLD for designers — name.dev — Best value in domains for anything developer-facing.page — Underrated Google Registry gem — cheap, HTTPS-enforced, and reads as a natural word for single-purpose sites
Wondering about another extension? Every real TLD is in the directory.
This answer is generated from the live IANA root zone list, not from vibes. If the DNS changes, this page changes.