large white space to the right of webpages running sparkling theme

I would like my website to run well on all browsers mobile and desktop. In opera mini for ios, on zooming out, there is a huge white space to the right of the websites running sparkling theme. What is causing it? Help me resolve it.
Here is the screenshot:

Hi @tcepertintodo,

Sorry to hear of the problem you are having.

Are you having the same issue on our sparkling theme demo site ?

Could you please share me your site URL where it’s happening so that i can troubleshoot it?

Kind Regards,