No Positioning

by labsrc

HTML

<div id='parent'>
  <p>
    Parent
  </p>
  <div id='child'>
    <p>
      Child
    </p>
  </div>
</div>

CSS

#parent {
  border: 3px solid black;
  display: inline-block;
  padding: 4em;
  margin: 1em;
}
#child {
  border: 3px solid blue;
  color: blue;
  top: 0;
  left: 0;
}