title: Making a horizontal line take up the rest of the space to the right of text
body: <p>I'm trying to make a section header that has:</p>
  
  <p><strong>HEADER NAME</strong> -------------------------------------------------</p>
  
  <p>Where the multiple ----'s are the horizontal rule.  Sadly, <code>hr</code>'s like to take up their own line.</p>
  
  <p>Any ideas?  I would really prefer to do this all in CSS and HTML.</p>