Positioning shortcode on page

Hi,

This seems like a silly problem, but I don’t seem to be able to position the shortcode [DISPLAY_ULTIMATE_SOCIAL_ICONS] on my page. I would like to centre it at the bottom of the page but regardless of what I try I always get the icons hard up against the left margin.

What am I doing wrong?

Geoff

The page I need help with: [log in to see the link]