The Markdown UI is a blank slate - you can include any content you want. The page will still show your navbar and footer, but the content in the middle is entirely up to you.
You can include HTML/CSS/JavaScript as well as markdown for constructing this page.
routes:
/home:
ui: markdown
markdown: |
# Home
Check out <a href="http://example.com" target="_blank">our homepage<a>
or see the [terms of service](/terms)
<style>
a {
color: blue;
}
</style>
/terms:
ui: markdown
markdownFile: ./terms_of_service.html