Hide a button on home page

Hello! 

I have added a back button button on my site but I need to hide it on the Home, Articles and Interview pages. The button only needs to show up the blog pages when someone is reading an article... see screen shots

SITE: https://martinamiduspeaks.squarespace.com/ 

PASSWORD: 2022MA

Any suggestions on how to hide it?

Thanks DV2 that seems to have worked!