---
sourceDocument: Australia ServiceNow AI Platform user interface
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/platform-user-interface

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia ServiceNow AI Platform user interface

ft:clusterId :

    - platux

bundleId :

    - platux

workflow :

    - Platform


---

# Activating CSS theme support

# Activating CSS theme support {#ariaid-title1}

* Release version: Australia
* 
* Updated March 12, 2026
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

There are different plugins that activate CSS themes support.
Activate the following plugins to use themes, based on the version of the UI you use.

Core UI: CSS Theme support See [Activate a plugin](https://www.servicenow.com/docs/access?context=t_ActivateAPlugin&version=australia&pubname=australia-platform-administration&ft:locale=en-US).
**Related tasks**   

* [Create or customize a theme](https://servicenow-prod.fluidtopics.net/VZQI5LNYdkAGrEs_xtefEA "You can create themes or customize existing themes.")  
**Related reference**   

* [Default CSS styles](https://servicenow-prod.fluidtopics.net/QS8tyV~aRN9sqkX2lDTuig "You can use CSS styles to control the appearance of elements in a theme.")