My page is not online yet, because of some issues with this theme functions.
My default theme has three-column.
I want to change this in one page and one post. I want to change to a two column, 1 sidebar theme or one column, No sidebar, theme in these specific post and page.
This can be done in settings and in page.
However, the problem is, the post does not getting bigger (640 px) and fill-in the page width?
It keeps its original size.
Why does it not switch into the two column theme size settings, which I have set to 640 px?
Does anyone have some code to fix this, and where to insert this?