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## B3 containers reference for B2B Edition for Stencil

Thanks to user feedback, B2B Edition for Stencil Themes (Legacy Experience) now lists every B3 container you can reposition with `window.b3themeConfig.useContainers`. Before this change, the **Customizing page containers** section pointed to a containers reference that linked back to the same section.

* **Container reference tables** — lists all 48 container names and their default mount selectors, grouped into page containers, desktop and mobile navigation buttons, and product, cart, and storefront elements
* **Naming pattern** — explains what the `.container`, `.button.container`, and `.button.container--s` suffixes mean, and notes that your overrides merge over the defaults

For details, see [Customizing page containers](/developer/docs/storefront/stencil/b2b-edition-for-stencil#customizing-page-containers).