Make center column text go over fixed widget, not under
 

Not sure how best to describe this ...

I've got a text widget with an image in it that I have managed to fix to the screen - so the text on the right scrolls.

Seems fine on my computer and tablet (I have jetpack mobile version for phones) BUT if you zoom in on the text on tablet it disappears under the image. Is there any way to put the container on top of the widget layer, so the text on a white background would go over the top of the image? That way if someone did need to zoom in to read the text they could still read it.

site is www.adhdkids.org.uk

thanks in advance!