Anti-Sticky is a browser extension which hides static (sticky) web elements when you scroll down. This frees up browser space for the primary content.
Banner and overlay are removed when you scroll down. They are redisplay as you scroll up.
Install web-ext: (as needed)
npm install web-ext
Build & sign Firefox add-on:
web-ext sign --channel=listed --api-key $API_KEY --api-secret $API_SECRET -s src
You can get the values for API_KEY and API_SECRET from this page.
MIT.