Simple mixin so you never forget to add focus

Mixin:

  @mixin hocus {
    &:hover,
    &:focus {
      @content;
    }
  }

Usage:

  a {
    text-decoration: none;
    @include hocus {
      text-decoration: underline;
    }
  }

Output:

  a {
    text-decoration: none;
  }
  a:hover,
  a:focus {
    text-decoration: underline;
  }