It depends on if you pack your data or not, really With simple development on a moderate website you might have a couple of html resources, a few css files and

It depends on if you pack your data or not, really With simple development on a moderate website you might have a couple of html resources, a few css files and some js files to fetch, not to mention all the media (images, videos and audio). It's easily half that just by doing sane development where you split functionality into files and if your site is media rich it's not surprising at all.