Front end issue, is Firefox or Chrome the problem?

[Martin84a]

Hi, I'm completely green and new to programming, and I've been asked to test a site for blatant bugs, until I become better. Firstly I have to say that the only tech site I know of where you can get help, is Anandtech, so if anyone knows a better place to ask such questions, do let me know!

Now to my problem. Hovering over some elements in chrome gives the desired result, but doing so in Firefox gives a different effect. How do I find out what the issue is, and whether it's Chrome doing it wrong or Firefox?

https://www.youtube.com/embed/3WNr4nlJ7VU/vq=hd1080

I've made the video super short and straight to the point. First you see Chrome 42, then I switch to Firefox 38.

Thanks

 

[Ken g6]

Sorry, not seeing a difference.

This feels like the CSSTricks forums might help you.

Edit: Not that I'm trying to send you away; I'm just confused to the point of not seeing the problem.

 

[ninaholic37]

The Firefox one looks better. Chrome is adding unnecessary gray space to the end of the url pop-up for some reason and it's foreground and background colors are too similar so they're not as readable.