# Theming your app

Ionic is built on top of [Sass](https://ionicframework.com/docs/what-is/#sass), which allows you to set some default styles for your app but makes it extremely easy for you to change defaults.

This app has two default themes, dark and light, you can customize both themes  in your **src/theme.**

![](https://95637101-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LPldOR-zLunAcbQ7rlx%2F-LPuj4aT8lgjublkCesY%2F-LPukGXQWvpZGhbYIAkC%2FScreen%20Shot%202018-10-28%20at%2012.58.12.png?alt=media\&token=a6e40ba7-29b1-4b6d-bfdc-1fbc368046ee)

<div align="left"><img src="https://95637101-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LPldOR-zLunAcbQ7rlx%2F-LPuj4aT8lgjublkCesY%2F-LPukQ25BSRnxIk59s2S%2FScreen%20Shot%202018-10-28%20at%2012.58.50.png?alt=media&#x26;token=2e3607fd-8e62-42f7-8b8a-9072582f45b9" alt=""></div>


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