title: scalable background image of popup. html, css
body: <p>I'm getting a problem in html and css,
   I used a bg image for my popup window whose size is 500px width and 400px height;
  having a scrollable text in it. but problem is that if i reduce a size of browser it get distorted. Please help me if i can make it scalable background and according to that text as per browser size.</p>
  
  <p>Thanks
  Mayur Mate</p>