title: How to create a modal popup using javascript and CSS
body: <p>Actually, two questions:</p>
  
  <ul>
  <li>How can I create a modal popup with background color of gray? </li>
  <li>Also I need to create for a cover background color only to table itself. Not to overall page.</li>
  </ul>
  
  <p>How do I do this using javascript and css?</p>