HTML
CSS
JavaScript
HTML
<html>
<head>
<script src='http://libs.itshubao.com/jquery/2.1.3/jquery.min.js'></script>
</head>
<body>
<h1>Welcome to My Homepage</h1>
<p class="intro">My name is Donald</p>
<p>I live in Duckburg</p>
<p>My best friend is Mickey</p>
<div id="choose"> Who is your favourite:
  <ul>
    <li>Goofy</li>
    <li>Mickey</li>
    <li>Pluto</li>
  </ul>
</div>
</body>
</html>
CSS

  

  

    
JavaScript

    
$(document).ready(function(){
    $(".intro").css("background-color","#B2E0FF");
});