title: Hide div with specific class while page is loading then show again after load
body: <p>I want to hide an specific div class while page is loading. The structure is..</p>
  
  <pre><code>&lt;div id ="container"&gt;
  &lt;div class="project-item tv"&gt;&lt;/div&gt;
  &lt;div class="project-item radio"&gt;&lt;/div&gt;
  &lt;div class="project-item radio"&gt;&lt;/div&gt;
  &lt;div class="project-item tv"&gt;&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>For example, I want to hide DIV with class radio while page is loading, then show them again after load. Thanks. </p>