How to make widgets in appear to right of webpage instead of at the bottom?

Hi

I upgraded from Custom Sidebars to Custom Sidebars Pro. The widgets appeared correctly at first to the right of the webpages. Recently the widgets were displayed at the bottom of the webpage.

How to make the widgets displayed correctly to the right of the webpage instead of at the bottom of the webpage please?

http://hu-techconsulting.com

Thanks and regards.

Benjamin Chan