Linked CSS file with ?raw=1 does not load anymore, but images embedded the same way do

[ Cross-linking for reference: https://stackoverflow.com/questions/50755249/serving-css-via-dropbox-suddenly-stopped-working ]

Based on the error message included in the StackOverflow post, this isn't working because, while the link is returning the CSS data, the browser isn't loading it because it doesn't have a Content-Type response header containing a css content type. I can't make any promises, but I'm bringing this up with the team to see if we can get this behavior changed.