For those building themes from scratch, Emby's default themes are stored in system\dashboard-ui\modules\themes folder on your server. Examining these files provides valuable insight into Emby's CSS structure and class naming conventions.
You can find pre-made themes and modifications shared by the community on the Emby Web App CSS forums . Notable options include: emby css themes upd
When Emby server updates break your theme, check the Emby community forums for updated versions or migration guides. Many theme creators promptly update their work following major Emby releases. For themes that rely on the basic Custom CSS field, you may need to manually apply updates each time you upgrade your Emby server. For those building themes from scratch, Emby's default
The current landscape of Emby theming (specifically for version 4.9.x stable For those building themes from scratch