[Plugin: Hybrid Connect] Problem with opt-in bar in Firefox

Lawd, someone help! I’m not totally web illiterate, but when I have to get in the code I’m a bit hit or miss. I would love some of your genius!

Here’s my site: http://www.abodyinspired.com/

I have an opt-in bar that looks fine in chrome and safari, but then goes wide in Firefox. I hired a web designer to set it up for me, who has since gone MIA, so I’m on my own now.

Here’s the problem (see links for screen shots):
http://www.abodyinspired.com/wp-content/uploads/2014/12/Screen-shot-2014-12-19-at-10.29.25-AM.png
http://www.abodyinspired.com/wp-content/uploads/2014/12/Screen-shot-2014-12-19-at-10.29.37-AM.png

I’m thinking it’s a problem with the hybrid connect plugin, OR it’s a problem with WP Layer Slider, since it looks like it almost needs to me moved to front?

Another note: It was working fine before I uninstalled WPSuperCache (I was having problems with my posts not updating), and then it went wonky. I tried reinstalling and it stayed broken. I don’t see why that would have caused it to break, but it’s worth noting.

Help me wordpress gods! Happy Holidays!
Allison