Smallest view (240px wide) with no JS renders in 6.9kB (DOMContentLoaded hit at 94ms, Load at 119ms). Also in play: client-side caching with ServiceWorker and some localStorage goodies to speed things up on modern browsers.
It's difficult to imagine what such an experience would contain, CSS animation trickery?
I'm very pro minimal UI code, my last hobby project didn't include any framework libraries and the front-end came in at 23kb including images, CSS, HTML and JS.
But without a back-end, and without JS (no SPAs), is this just a contest to build the best looking static page?
This is what I learned from the experience: http://openmymind.net/Minimalist-Markup/
Although minification & GZip should even those out.
I guess they really mean the old school 'website' (like the html 1.0 strict days), so maybe a html document with everything inline and no special fonts.
The winning site: http://web.archive.org/web/20000510060852/http://www.sylloge...
Wait, we're talking about bytes?