Is it possible to style anonymous flex items explicitly?

Question

I\'m in the early stages of grasping the basic flexbox concepts. The Using CSS Flexible Boxes article at MDN states (emphasis mine):

Each child of a f

Answer 1

Obviously not, since otherwise all text in the following example would have to be styled like the word "just":

p,
em {
  margin: 1em;
  padding: 1em;
}

p {
  border: 1px solid blue;
  display: flex;
  justify-content: space-between;
}

em {
  border: 1px solid orange;
  display: inline-flex;
}

p * {
  color: green;
  font-size: 2em;
}

This is a just a test.