Order summary with HTML, CSS and Sass

Feedback is greatly appreciated.

It's my first time with Sass and I would like to know your opinion about nesting. I have read that it is not recommended to nest more than about 3 levels in Sass to avoid creating selectors that are too specific and not very reusable. I'd like to know what you think about this recommendation and how you break up selectors in cases like this, where there are deeper levels of nesting in the HTML.

Thank you very much!