¿Es posible crear páginas personalizadas en Discourse?

[NateDhaliwal]

I believe you can still use CSS to style published pages:

@Discourse

How can I customize the look of a published page?

Use the structure of the HTML document and corresponding CSS selectors to apply custom styles under Admin > Customize > Themes > CSS.

Additional resources

• Make CSS changes on Your Site

If I’m not wrong, published pages can be targeted with the .published-page CSS class.