Very long annotations cut off in Santa Fe, Berlin

[mebrett]

On certain themes, longer annotations at the bottom of the image get cut off when the annotated image block is at the bottom of the exhibit page.

This is only true for Santa Fe and Berlin. In Minimalist, if the text in the annotation runs too long, there's a scroll bar for the exhibit page section. In all other themes, the annotation appears over the footer, etc, rather than under.

Ex in Berlin:

[jimsafley]

@kimisgold I seem to remember that there's an easy fix by applying overflow: scroll to the containing tag. Would you mind looking into this for Santa Fe and Berlin?