<article>
  <p><strong>I am a strong element that is bold because that is the inherited user agent style.</strong></p>
  <aside>
    <p><strong>I am a strong element but my font weight is normal because it is in an aside element.</strong></p>
  </aside>
</article>

aside strong {
  font-weight: initial;
}


/* presentational styles */
article > * + * {
  margin-top: 1em;
}