Newbie: How to remove the bars.

I have two gray bars, I am not sure if they originate in the header or in the centre. Regardless, I cannot find where to change or delete them. I have set the settings for bar1% and bar2% to white thinking that they be the culprits but no luck.

The bars appear underneath the header image and span the width of the screen.

You can see them here
http://www.torontocranks.com