Scholar: left sidebar drops to the bottom of the home page

Hi:
my client live site is: http://fewjapan.com/
This is pretty urgent:
1. I upgraded the Scholar, theme
2. I always replace the upgraded child theme CSS styling with the stylesheets I need for the design.
3. I dropped the styling I want back into the child theme.

Problem: the left sidebar drops to the bottom of the page.

Please let me know how to fix this. thanks,
Terri