.bar:before {
  content: 'baz';
}

.awesome:before {
  color: green;
}

:root {
  color: purple;
}

.bar.awesome {
  color: hotpink;
}

.sibling + .foo {
  color: yellow;
}

.foobar > .awesome {
  color: tomato;
}

a.awesome {
  color: rebeccapurple;
}