How to copy code (media queries - css) to codepen?

I decided to use media queries to make my portfolio site responsive in brackets because I had some issues with bootstrap. How do I copy it to codepen with three different css files? If possible.

Will it work? It sounds like improvisation that doesn’t give results.

EDIT: it doesn’t work. It shows the last one I paste there, always. Guess I’m gonna have to solve my Bootstrap grid problem :frowning:

No I actually paste all four (not three like I said). It ended up having around 1200 lines of code. I will try again now and let you know.

EDIT: yep pasted them all again but nothing changes when I change the width of the browser.

Don’t let this be too much of a hassle I will need to befriend bootstrap’s grid system anyways.