code-prettify seems to want to grab pretty.css from a cdn, rather than use a local copy - is it possible to configure things so that it uses the local version without a network call?
The run_prettify.js loads from a CDN and uses query flags to figure
out what to load:
<head>
<script src="https://cdn.rawgit.com/google/code-prettify/master/loader/run_prettify.js"></script>
</head>
<body>
...
</body>
The prettify.js script gives you more control over loading but you have to remember to load the language handlers you need and call PR.prettyPrint() on load:
<head>
<script src="/path/to/prettify.js"></script>
<link rel="stylesheet" href="/path/to/prettify.css" />
<!-- You would also need to load the language handlers you need here. -->
</head>
<body onload="PR.prettyPrint()">
...
</body>
You can find prettify.{js,css} and the language handlers in https://github.com/google/code-prettify/tree/master/src