Sass Nesting using &

sass-nesting.md

1. Nesting:

.anElement {

  &_aBlock {
    …
  }

  &_anotherBlock {
    …
  }

  &_anotherBlockAgain {

    &:hover {
      …
    }
  }
}

2. Limiting Nesting to Pseudo Elements:

.anElement {
  …
}

.anElement_aBlock {
  …
}

.anElement_anotherBlock {
  …
}

.anElement_anotherBlockAgain {

  &:hover {
    …
  }
}

The ability to search a codebase for a class name is super important.

anElement will be repeated in your output a number of times anyways, so being DRY I'm not sure is really a concern here.

My vote - no nesting except pseudo selectors.