---
title: "CSS support for universal app customisers - Sign Customiser Changelog"
description: "Changelog: CSS support for universal app customisers. Learn about the latest updates and improvements to Sign Customiser."
url: "https://www.signcustomiser.com/changelog/custom-css-in-admin/"
last_updated: "2026-09-03"
---

This update now makes it possible for universal app customisers to have support for custom CSS.

You can now edit the CSS of your customiser while you are previewing it in our admin application.

Previously, CSS could only be applied by editing the shopify theme itself, which made it impossible for universal app customisers to applly custom css.

This feature makes it even easier to have your customiser match your brand and style.

![Custom CSS in admin](/_astro/edit-css-preview.Xo-Joo3R_OXsBm.webp)

![Custom CSS in admin](/_astro/edit-css-modal.DsG0THQI_Z2oUjOd.webp)

Read more about how to use this new feature in our documentation:

/help/customise/custom-css/

## Sitemap

See the full [sitemap](/sitemap.md) for all pages.