---
title: app.tyss Global Style
---

# app.tyss Global Style

The style defined in the `app.tyss` is a global style and acts on all pages of the current miniapp. For more information about `tyss`, see [MiniApp Style](/en/miniapp/develop/miniapp/framework/tyss).

> **Note**: By default, the global style cannot act on custom components, but shall be matched with the style configuration of custom components. For more information, see [Component](/en/miniapp/develop/miniapp/framework/api/component#styleisolation-Component style isolation).