---
title: "Stable custom CSS hooks across the customer customiser - Sign Customiser Changelog"
description: "Changelog: Stable custom CSS hooks across the customer customiser. Learn about the latest updates and improvements to Sign Customiser."
url: "https://www.signcustomiser.com/changelog/stable-custom-css-hooks-across-the-customer-customiser/"
last_updated: "2026-10-22"
---

Sign Customiser now gives merchants a stable CSS class for each part of the customer customiser. Existing custom CSS can target controls and states more precisely, without relying on generated class names that may change after an update.

## What’s Changed

- **More complete CSS coverage**Stable classes now cover the customiser’s controls, forms, pricing details, previews, loading states and other visible elements
- **Reliable pop-up styling**Modals, tooltips and popovers have dedicated classes, including elements that render outside the main customiser container
- **Predictable state selectors**Selected, open, active, disabled and error states use consistent class names where those states are available
- **Embed wrapper controls**Shopify theme embeds and website integration wrappers now expose stable classes for their containers, loading screens, modals and validation messages
- **Safer saved CSS**Sign Customiser now handles merchant CSS and customiser setup data more safely when loading embedded, hosted and preview customisers

- [feature](/changelog/tag/feature/)
- [fix](/changelog/tag/fix/)

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## Previousupdates

[View all updates](/changelog/)

- [July 17, 2026Sell in multiple languages from one customiserTranslate one customiser by hand or with AI, then show Shopify and Universal shoppers the right published language.feature](/changelog/sell-in-multiple-languages-from-one-customiser/)
- [July 15, 2026Custom sizes now open in your shopper's local unitsCustom-size inputs now start in inches or centimetres to match the shopper's active Shopify market, with no merchant setup required.feature](/changelog/custom-size-units-follow-shopper-region/)
- [July 15, 2026Choose how your customiser works on mobileEvery Sign Customiser customiser can now use either a stacked mobile layout or a focused step-by-step layout.feature](/changelog/choose-mobile-layout-for-every-customiser/)
- [July 15, 2026Better automatic sizing for Advanced customisersThe size lock now reliably returns manually resized signs to automatic, content-driven width.feature](/changelog/automatic-width-for-advanced-customisers/)

[View all updates](/changelog/)

## Sitemap

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