Is it possible to make this box's corner round with same html tags. without using any other tag. but i can use css classes. and box height should be depend on content of <p>grr</p>

<h2>Nulla Facilisi</h2>
<p>
   Phasellus at turpis lacus. Nulla hendrerit lobortis nibh. 
   In lectus erat, blandit non feugiat vel, accumsan ac dolor. 
   Etiam et ligula vel tortor tempus vehicula porttitor ut ligula. 
   Mauris felis odio, fermentum vel
</p>