css-exercises/foundations/03-grouping-selectors/solution/solution.css

.inverted,
.fancy {
  font-family: Helvetica, "Times New Roman", sans-serif;
  font-size: 28px;
}

.inverted {
  background-color: black;
  color: white;
  font-weight: bold;
}

.fancy {
  background-color: yellow;
}