Stop popup for Microsoft Edge

Where are you seeing this popup?

I get the pop up when I first open Fire Fox.

This is not from the Firefox web browser nor Mozilla. If you are on a Microsoft site like their Bing.com search engine site then you may get a in-page ad running on Bing search engine results. Either click on later, use a ad blocking extension or use a different search engine site like DuckDuckGo or Google.