title: how to call browser based css?
body: <p>we can get the browser name from javascript but is there any way to change css accordingly.I mean some classes of css file because I dont want to link another css file ,  I want to write styles on<br>
     <code>if chrome</code></p>
  
  <pre><code> a img
  {
  margin:0;
  }
  
  //if mozila
  
  a img
  {
  margin:5px;
  }
  </code></pre>