Problem With Firefox

[WhyIsItReal]

So, I'm able to access Media Fire now, but not in Firefox. This isn't the only issue I'm having, though. I can't close out of any tabs, and some tabs are on top of each other. I would close the window, but I'm doing amazingly well at MPGH Clicker, so I don't want to close that tab.

Anyone know what's going on?

EDIT: I can use Ctrl + Shift + E to separate the tabs into groups, but the tabs are still open.

EDIT 2: I've found a temporary solution, but still don't know what the problem is. By opening a new window, and then copying and pasting everything that I wanted, and then closing the old window, I was able to get rid of the tabs on top of each other. I'm also able to close tabs.