title: App-like Light/Brightening effect
body: <p>does anybody know if there's a way to create an <code>CSS</code> effect which looks like the light effect used for <code>iPhone apps</code>? I mean the upper, brighter part of the box.</p>
  
  <p>Thanks,</p>
  
  <p>Ron</p>
  
  <p><img src="https://i.stack.imgur.com/TTGuv.jpg" alt="enter image description here"></p>