Squeeze page templates cross-browsing compatible

Hello, gents.

I needed some free landing/squeeze page templates or a tool, in case you recommend one, for creating landing pages compatible with most of the desktop browsers and mobile devices.

I wanted to make some stuff on my own, but the compatibility is important. Any recommendation? If it's free, it is way better.

Hey dog, I am horse. I don't know the solution to your question so sorry, good day.
edit: (maybe someone smarter than us animals will help)