No back ground color on the Tours page

Hello

If you see the link here: https://suntourznz.com/wp/tours/historical-stone-town-tour/
there is no background color for the tour price above the “Book tour” in the right coloum. Where can I set that so it is yellow like on your demo page?
Is there a CSS setting that is missing in your files or?

Mads Molgaard