Redirect after download code in HTML

I had a code before that worked fine, but can't find it and don't remember it.
If I am to set up a download "file.zip" for people to download and then redirect them to another site after download, how do I do this?

Thanks.

I have:

<a
   href="/file.zip"

HTML:

But after that I'm blank

 

Never mind, figured it out myself, just made some tweeks and things with the code