How to center a javascript code block

Site URL: https://www.weddingonepager.com/take-the-wedding-styles-quiz

I use Interract quiz maker as a lead magnet on my site. I embedded their code using the javascript option (which I had to do so I could redirect users to a results page). But the block appears slightly off center. I tried wrapping it with <div align="center"> <div> - which did not work. Any advice is MUCH appreciated.

Screenshot of problem and embed code attached.

Any help much appreciated. Total #newbie over here and Interract support was not helpful.