Extends

Extends are a controversial part of Sass, with a lot of people preferring not to use them, including myself. That said, they're a pretty neat feature, and if used properly, can be used well.
Extends
An introduction to Extends
4 mins
Placeholders
2 mins
Don't forget about the other stuff you can do
2 mins
Problems with extends - 1
2 mins
Problems with extends - 2
4 mins