title: jQuery UI not linking to my page (transparent background)
body: <p>I'm using jQuery for the first time because I want to make use of the datepicker.
  I have the datepicker working fine, but the background of it is transparent.
  I have downloaded the <em>ui-lightness</em> theme and I'm trying to include it in the php page.
  Here is the code:</p>
  
  <pre><code>&lt;head&gt;
  &lt;script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.21/jquery-ui.min.js"&gt;&lt;/script&gt;
  &lt;link type="text/css" href="css/ui-lightness/jquery-ui-1.8.21.custom.css" rel="stylesheet" /&gt;
  &lt;/head&gt;
  </code></pre>
  
  <p>My directory structure looks like this:<br />
  ¦-css<br />
  ¦--ui-lightness<br />
  ¦---jquery-ui-1.8.21.custom.css<br />
  ¦-myPhpPage.php</p>
  
  <p><strong>My question is, why is my css file not linking to my php page?</strong></p>