CSS Responsive for Chrome

Hello. Yes at the moment it DOES disappear. I initially wanted the tagline simply a couple point sizes smaller at about 1200px but since what I was seeing wasn’t correct ( it jumps up a size then shrinks back down before disappearing) in Chrome I just settled and made it all 18px. My main goal was to be able to have specific responsive sizes set in place for Chrome so I could better customize the look on various sites on various devices.

Are there separate @media query classes that should be used for viewing on Chrome vs Firefox? This will be useful as we really like the enfold theme and purchase it for all of our websites. Not certain if this “how to/cheat sheet” already exists and is available somewhere. Would love the ability to drill down to specify styles at different views points as needed for all of our sites.