title: CSS style attribute left blank
body: <p>What happens when a CSS property like <code>transform</code> is left empty, i.e. </p>
  
  <pre class="lang-js prettyprint-override"><code>element.style.transform = "";
  </code></pre>
  
  <p>check this fiddle-
  <a href="https://jsfiddle.net/e85odhjf/" rel="nofollow">https://jsfiddle.net/e85odhjf/</a></p>
  
  <p>In the javascript part, i left the left.style.transform="" in the back() function(controlled by onmouseout) , so it brought back the shape to the original form.</p>