Hi There,
Thank you for writing in, but I can’t view your site it is Under Construction.
Though I have an idea about this issue, I think your section on the Cornerstone preview gets an extra height because the content is getting wrapped, while on the actual front-page you get the actual width of the section that saves it from wrapping its content.
So to resolve this, you need to add a height to your section. You can do this by adding an equal Gap element on top and on the bottom of your section. Or you can add the min-height property to your section’s STYLE field.
Its up to you how much additional height you need for your section, so adjust the Gap element or min-height accordingly.
Cheers!