message: Missing `em` unit for font-size.
diff: @@ -105,7 +105,7 @@ You can also access the font sizes in Styled Components through the Fannypack Th
  import { Text, theme, styled } from 'fannypack';
  const LargeText = styled(Text)`
  - font-size: ${theme('fannypack.fontSizes.700')};
  + font-size: ${theme('fannypack.fontSizes.700')}em;
  `;
  ```
  