List section (Simple List): Remove image overlay?

I have a List section (Simple List) for team members - is there a way to remove the brownish image overlay? I have tried inspecting the code but couldn't find anything that works. Thanks in advance.

Site URL (password: everypersonsage): https://raspberry-falcon-dr5p.squarespace.com/about-ycd

@tuanphan You are amazing, thank you!! This works great.