Using Screen when converting from CSS_PATH to DEFAULT_CSS for App

[davetapley]

This might be a bug.

I have a main.css:

Screen {
  layout: grid;
  grid-size: 2;
  grid-columns: 1fr 2fr;
}

It uses Screen per the docs:

Screen is the parent container of the widgets yielded from the App.compose method, and can be thought of as the terminal window itself.

I'd like to inline it with DEFAULT_CSS (to avoid silliness with PyInstaller's --add-data).
My assumption is that I should be able to just copy main.css verbatim into the .py (replacing CSS_PATH to DEFAULT_CSS).

However that doesn't work, no error, the CSS just isn't applied (no grid) ⚠️

User error, or bug? 🤔

[TomJGooding]

Sorry but just to confirm: you're not trying to use DEFAULT_CSS in your app rather than CSS?

https://textual.textualize.io/guide/app/#classvar-css

[willmcgugan]

DEFAULT_CSS has a lower specificity, so that external CSS always wins when rules clash.

If you are moving external stylesheets inline, you should probably use the classvar CSS on your App, which has the same specificity as external files.

[TomJGooding]

☝️ Obviously the better answer straight from the horse's mouth - sorry we must have posted almost the exact same time!