How to import per page css without modules

[tankpower1]

Hi, so currently i have an issue with importing css from node_modules only where i need it.
In my _app.js i import the global css, but i need to import a css file from a package in node_modules only in a certain page which is rarely opened. Without using modules i have no other way but to import it also globally in _app.js and thats a problem since the css is quite big and loads on every page. So my question is how can i import 'node_modules/package/index.css' only on the page i need it to without using modules. Using next-css works but breaks some of the features of the canary release im on (9.3.1-canary.6).