@simevidas This seems to be only functions? And only returning single string values?

This isn't wnat I expect from "mixins".

I expect this from mixins:

```
@mixin bob {
prop: val;
otherProp: other val;
}

.thing {
@mixin bob;
...
}
```

e.g.,

Define heading styles, and include them where needed.

WITHOUT:

- code repetition
- a massive selector list divorced from context
- relying on naked heading levels
- relying on utility classes

Functions I never use in SCSS. ^ that I do. A lot.