title: How can I use templates to generate static web pages?
body: <p>I want to add one HTML file into another.</p>
  
  <p>For example: I have <code>header.html</code> and <code>footer.html</code> 
  Now I am trying to create <code>aboutus.html</code> where I want to add these two HTML files
  there is no dynamic code in these file except JavaScript.</p>
  
  <p>How can I do this without using any scripting language except JavaScript and CSS?</p>