Heres an great example from the 1kbclub: https://1k.lom.me/ Without the htaccess, the complete site is 555 bytes, so you would still have ~500 more until you hit the mark. :)

Its a 1Kb webspace. It should bring you to simply and shorten as much as you can instead of big size webpages. Archive.org has a backup: https://web.archive.org/web/20131208003019/http://onekb.net/