title: Position a image over another existing `<img />` in CSS
body: <p>I am doing a page where I show thumbnails for videos that, when you click, it popups a YouTube video.</p>
  
  <p>This thumbnails are simple images of 195x195 but the end client it will upload as it, and I would like to add via CSS a "play icon" over the image of the video (compatible with IE7+). I've no idea on how to handle this.</p>
  
  <p>Can anyone help me?</p>
  
  <p>Thank you in advance!</p>