You can't.. all info generated inside the containers is done automated by daddyleagues.. there's no way to edit at will..!
Maybe you posted the link to your page wrong? But when I went to it all I saw were the gamescores and none of the containers ect..!
If you want your background as a image replace the link in that code in ur post to a website of the image you want..! If you want your background to be a certain color then replace the link with the word "transparent" then delete background-color: #000000"; and replace with background: #000000;
I don't know if you can archive them but you can add a slide bar so it won't clutter the page... just google "sidebar html code" and I'm sure a few sites will have it and you can set width and height as well to fit your page perfectly!