title: XML style information
body: <p>I am trying to learn XML with some simple code. When the code is opened in a web browser, there's a message saying:</p>
  
  <blockquote>
    <p>This XML file does not appear to have any style information associated with it. The document tree is shown below.</p>
  </blockquote>
  
  <p>After the above message, the XML is displayed</p>
  
  <p>What does this warning message mean, and how can I solve it?</p>