insert-css provides a simple and efficient way to programmatically insert CSS rules into a document. It creates a style element and injects the provided CSS as a string. Ideal for dynamically styling web applications based on runtime conditions or user input. Works in both browser and Node.js environments. Offers a lightweight solution compared to heavier CSS-in-JS libraries, focusing solely on insertion with minimal overhead. Streamline your dynamic styling needs with its simplicity and portability.