[mrieck]

It just intercepts any files of "text/css" mime types appends them all together while also including the content of <style> tags.

If anyone wants something more specific that gets a section's CSS and all associated styles, I built an extension for that called SnipCSS.

https://chrome.google.com/webstore/detail/snipcss/hbdnoadcma...

My extension doesn't download or parse CSS stylesheets to get styles, I use the Devtools protocol https://chromedevtools.github.io/devtools-protocol/tot/CSS/