Margins appearing on some pages but not others

Hi,

I'm using columns, which stack on mobile.

On this page: http://www.greenkind.co.uk/oat-milk there is a 30px margin underneath the button, which separates it from the picture below.

I've done everything the same, but the 30px margin does not appear on this page: http://www.greenkind.co.uk/soya-milk - here the button sits directly on top of the image despite having the same margin.