If you want the right hand column you can turn it on in the admin--configuration--layout boxes controller. You will need to add the styles for the right hand column. Looking at your site I can see that you have broken the responsive layout. I would back track through your changes to find out where the problem started.
Add your ezpages styles to line 80 of the stylesheet.css file. If you want to make css changes I would recommend using chrome and the web developer tools. They will tell you the exact line of the file you need to edit.
Thanks,
Anne
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