They have researched the best way to integrate Tailwind CSS with Oxygen, Bricks, and Gutenberg and have implemented it in the most efficient way. The Winden implements the CDN for the development inside the Oxygen, Bricks, and Gutenberg editors and the Worker generates the CSS cache for production.
The CDN provided is a giant CSS file that contains pre-generated CSS classes for every default class that is available in the Tailwind CSS. This results in a huge amount of CSS classes that will be loaded on your browser.