Could detail a little bit your build process ?
(I couldn't find any real ressources on the build process for elm apps)
Checking your app you use elm-live, but I couldn't find how elm-live would do gzipping.
Does this mean in production, you rely on the server to gzip files ?
Also, since the css was provided to you, you didn't need to build it or do anything with it. There could be another advantage of a build tool. Do you use elm-live at NoRedInk too ? (I couldn't find anywhere, where you could customize, minify and gzip the css with elm-live)