Pricing tables pushed right in Firefox

I’m using this theme: Zerif Lite 1.4.3

The page in question is here: http://www.customerdiscovery.ninja/pricing/

It works fine in Google Chrome, but in Firefox it looks like the pricing table is outside of the container <div> that it needs.

All other pages from this theme (with just written content) look fine in Firefox.

Any suggestions?

Thanks!

https://wordpress.org/plugins/easy-pricing-tables/