How to remove huge white spaces in product page mobile Ware House theme?

[MOCHILOCO]

Good afternoon, friends. The ware house theme's mobile product page is not optimized at all and a lot of content is below the fold because of huge white spaces. Can anyone help me with the code adjustments to remove these spaces? Or at least remove the thin divider line seen under the name of the product? I want these edits to apply to mobile view only. Desktop should remain the same. Thanks in advance for the assistance!

Store: www.mochilo.co

[MOCHILOCO]

Hi! Yes, that is exactly what I'm looking for. I added the code, but there seems to be no change.

[MOCHILOCO]

Works like a charm. Thank you!