By the way — whether “Use Compiled CSS” is enabled or not, your CSS can work in your app as long as it functions correctly in the builder.
When “Use Compiled CSS” is turned on, Glide automatically prefixes #page-root to your selectors. That’s the key difference — it limits your CSS so that it only targets elements under the #page-root hierarchy.
My suggestion: turn “Use Compiled CSS” off.
See this thread for more context: