title: Media query to detect laggy position: fixed behaviour
body: <p>I have a website with some elements that have <code>position: fixed</code>. It looks fine on a desktop browser, but on my phone (Xperia Arc, Android 2.3) those elements scroll with the page until you release your finger from the screen, at which point they'll jump to their proper location. This looks ugly.</p>
  
  <p>Now, I could easily change the CSS so the site also looks fine on devices with this behaviour, but can such behaviour (or a correlated property) be detected with a CSS media query?</p>