Use "Stylus" or "userstyles.world" to apply themes locally.
The keyword "portable" changes everything. A is designed to be: emby css themes portable
Existing themes are non-portable. They must be manually copied to each device’s browser cache or client app, break after Emby updates, and fail to synchronize across multiple users. Use "Stylus" or "userstyles
Portable CSS themes refer to self-contained CSS files or modules that can be easily moved, shared, and applied across different web projects without requiring significant modifications. These themes are designed to be independent of the project's underlying structure, making it possible to switch between different themes or update a theme without affecting the rest of the application. Portable CSS themes typically consist of a set of CSS rules, variables, and mixins that define the visual styling and layout of a website or application. They must be manually copied to each device’s
We propose a three-layer architecture:
For advanced portability, you can use (also available in portable browsers). This method is similar to Stylus but offers more dynamic injection—useful if your CSS depends on the time of day or user login status.