title: animate width of a box towards left
body: <p>I have a div box</p>
  
  <pre><code>&lt;div style="width: 400px; height: 400px; position: absolute; left: 350px; top: 350px; background-color: #cdcdcd;"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>i can easily animate its width towards right side (left edge will be on fixed position).<br>
  How to fix the right edge of the box and animate its width towards left???<br>
  i.e. box will expand towards left side.</p>