This is the background of the Bottom Area shown below. It'll display correctly on published site.
If you don't want background for the bottom area, simply hover over the bottom of this image to delete it. The background of the bottom area will be a solid dark color.
More information on the CBL
AGE REQUIREMENTS FOR COMPETITIONS KID DIVISION 5-12 TEEN DIVISION 13-17 ADULT DIVISION 18 AND OVER