Looking for a simple Mac text editor with CSS3-based PDF export

Hi,

i'd like to design my PDF text documents using CSS3 as working with CSS is easier for me than in InDesign etc.

I've been using Mou for a while to export Markdown text into PDF files. But it's CSS customization options for PDF export seem limited ('@page' doesn't work etc.).

Basically, what I'm looking for is a simple text editor that allows me to use HTML tags for structuring and CSS for design and is able to export PDF files. I know that a lot of web editors offer PDF export, but I'm more interested in an application focusing on print/text.

I'd be more than thankful if anyone could point me into the right direction.