Firebase Automatic Redirect Depending on Users Language

I'm a noob trying to do my first html page using Google Firebase Hosting. I created my project with just an index.html and is currently deployed on my domain. I would like to provide 2 different pages on my site, one in english when the user is using their browsers on that language, and in any other case showing the page in spanish.

I've seen a couple questions on how to do this with .htaccess on wordpress, but it appears that this doesn't work on Firebase.

Any suggestions on what can I do or where should I look? I haven't find anything yet on the firebase doccumentation. Thank's :) sorry for bad english