Using CSS in DocRaptor is exactly the same as in normal web pages. You can embed your stylesheet with a style tag:
<style>
body {
background-color: blue;
}
</style>
Or use inline styles:
<a href="https://docraptor.com" style="color: blue;">DocRaptor!</style>
Or link to an external stylesheets with absolute URLs (or define a baseurl for your document). While we fully support external stylesheets, it is slightly faster to use <style> tags because we don't have to fetch your CSS file.
<link rel="stylesheet" media="screen" href="https://yourdomain.com/stylesheet.css" />