You might have a few reasons for some additional styling on your Ghost site. For me, I added a contact form and I want to include a custom homepage without doing a custom build.
If you look at the tailwindcss documentation they do have a copy hosted on a CDN, but they say "Only for development", "Not recommended for production". Basically, swim at your own risk. Its probably totally fine, but I'd rather just do things "right" and be able to rely on the solution. I was starting to wonder if there was a solution I would be satisfied with. Before I realized what I'm about to share I even wrote my own inline css. Yuck!
The Key Componets
Every Ghost page has the ability to add code injection. Check out the documentation to find out how. https://ghost.org/changelog/post-code-injection/
Create your HTML in Tailwind Play and then use the generated CSS tab to grab all the CSS!
If you would like a step-by-step guide on how to implement this check out my in depth post!