Why Does My Sidebar Do This?

I'm having a problem with my WP sidebar...

As you can see here, the sidebar has moved downwards a little (see how it should display here).

On another page (not published yet), it has even moved to the bottom of the page - it shows underneath the main page).

I assume it must have something to do with the widths of either the main part or the sidebar, but I can't seem to find the problem...

 

Reduce the size of the id content. It is either that or a floating issue.

 

try using the same style sheets as the correct page, and if you are try writing custom css for it ?

 

Thanks for the tips.

After a long search, I finally found the piece of css code I needed to edit.