Hello, Ghost!

512px-HelloWorld

<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.9.0/styles/default.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.9.0/highlight.min.js"></script>
<script>hljs.initHighlightingOnLoad();</script>
<style>
  pre {
    hyphens: none;
    line-height: 1.3em;
  }
    pre code, pre tt {
    white-space: pre;
  }
</style>

できた。