title: which of the h1 tag code is correct?
body: <p>I want to know which of the following code is correct... among all the three...</p>
  
  <pre><code>&lt;h1&gt;&lt;span class="bold"&gt;realestate&lt;/h1&gt;
  &lt;h1&gt;realestate&lt;/h1&gt;
  &lt;h1 class=bold&gt;realestate&lt;/h1&gt;
  </code></pre>
  
  <p>Please let me know about that...</p>