How to change the checkout page logo

How can I change my logo on the checkout page? The main logo is the same color as the background I want. Is it possible to change the logo?

Checkout (/checkout) or Cart Page (/cart)? 
If checkout, it is not possible

If Cart page, you can share site url, we can help easier

Thanks for your message! Tuanphan! It's just that I didn't think the Checkout page was possible. 

Perhaps in a future update Squarespace will offer the possibility of modifying this page. 

And I'd also like to thank you for all your forum posts, I was able to learn Squarespace's CSS code structure. 

Thank you Paul2009 for your reply. That's what I did. But it takes me out of my chart. It's not a big deal. But adding this option is not very complicated in development and I hope Squarespace will do it in an update.