Broken CSS

I have just installed this plugin and created a pricing table.

When I insert this into a page all the widgets in my footer have been moved to the left of the page.

I have inspected the css on the page and have found that when this is added some sections of my themes style.css are not being loaded.

When I remove the tables everything goes back to normal.

This is the page on my site (testing Server) http://test.magistercs.co.uk

you can check the other pages and all is as it should be.

Thanks

https://wordpress.org/plugins/pricing-table/