add more than 6 columns plus a sidebar

Hello,

I need to make an 8 column website with a sidebar. I followed the steps here: https://kriesi.at/documentation/enfold/columns/#six-columns-or-more

Now the sidebar gets pushed to the bottom of the page.

I would be happy to make a 9th column and manually add the sidebar, but since the content of the sidebar is taller than the content of the 1-8 columns then the second row of 1-8 columns gets pushed down.

Is there a way around this? By either making the colour section not full width or another way?

I essentially need to make a grid of thumbnails, 8 coloumns accross and a few dozen rows. I would just use HTML but my client needs to be able to edit it.

Thanks.