Pro tip: You can change any dropbox link into an automatic download link via altering the 0 at the end to a 1.
Paste your dropbox link in the Link Settings of a “Download” button (or whatever you wish to call it) and viola - you now have the functionality all of you are demanding (available right now without Webflow Staff needing to release anything).
Cheers,
Christopher
P.S. Works with all files!