How to divide the web page in different segment.? : <p>Hi Currently i am working in web project. There it self i am designing a website for mobile device. Here i want to know behalf of what i can use pixel for footer,header.And what is default height and width for mobile device.
Here some sample code is there</p>

<pre><code>      &lt;body&gt;
      &lt;div id="header"&gt;
      &lt;h1&gt;Books Gallery&lt;/h1&gt;
      &lt;/div&gt;
      &lt;div id="footer"&gt;
      **Copyright © 2016*
&lt;/div&gt;
&lt;/body&gt;
</code></pre>
