.secondary does not change anything for me though. Changing the .container changes the article size also. Changing .sidebar to something bigger like 30% puts the sidebar at the bottom.
It has a sidebar. I was playing with the CSS. Sorry. When I increase the side bar to 30%, it goes to the bottom of the page so it looks like it does not have a sidebar.
I placed it back now. Or I reset the code back to the original.