There's a screenshot purporting to be of GitHub from May 2008. There are tell-tale signs, though, that some or all of the CSS has failed to load, and that that's not really what the site would have looked like if you visited it at the time. Indeed, if you check github.com in the Wayback Machine, you can see that its earliest crawl was May 2008, and it failed to capture the external style sheet, which results in a 404 when you try to load that copy today. Probably best to just not include a screenshot when that happens.

(Although it's especially silly in this case, since accessing that copy[1] in the Wayback Machine reveals that the GitHub website included screenshots of itself that look nothing like the screenshot in this article.)

1. <https://web.archive.org/web/20080514210148/http://github.com...>