Exactly my point!!!
First it appears that you are not using the right column but it is still there.
admin > config > layout settings > Column Right Status - Global > set to "0"
Your left column settings are not aligning correctly:
admin > config > layout settings > Column Width - Left Boxes >
admin > config > layout settings > Column Width - Left >
at a minimum match the settings or alternatively make the Column Width larger than the box width
The above will change the look of your site by quite a bit and if still not to your liking in your stylesheet.css file find this tag and if it exists nested - separate it out into its own entry or just add it and adjust to suit
Code:
.centerBoxContentsNew {
padding: .1em;
}