title: Which browsers already support Media Queries Level 4?
body: <p>Which browsers already support some of these attributes?
  <a href="http://dev.w3.org/csswg/mediaqueries4/" rel="noreferrer">http://dev.w3.org/csswg/mediaqueries4/</a></p>
  
  <p>This one f.e. does not work on iOS7, iPhone 4S</p>
  
  <pre><code>@media (luminosity: normal) {
      body {
          background: #f5f5f5;
          color: #262626;
      }
  }
  
  @media (luminosity: dim) {
      body {
          background: #e9e4e3;
      }
  }
  
  @media (luminosity: washed) {
      body {
          background: #ffffff;
      }
  }
  </code></pre>