CodePen Embed - eYgKdZW

<html>
  위는 안채워진 p태그, 아래는 채워진 p태그
  <p></p>
  <p>abcde</p>
</html>

:root {
  background-color:green;
  
}
p {
  border:2px solid black;
}
p:empty {
  border:2px solid blue;
}

This Pen is owned by dev on CodePen.

This Pen doesn't use any external CSS resources.

This Pen doesn't use any external JavaScript resources.