# #3 Overriding a file

{% embed url="<https://youtu.be/Oi45D1r1DUs>" %}
How to override a file
{% endembed %}

In this tutorial we will showcase and talk about following topics:

* [Themes and parent themes](https://docs.create-scandipwa-app.com/themes/extensions-and-themes) (link to Create ScandiPWA App documentation)
* [File overrides](https://docs.create-scandipwa-app.com/themes/parent-themes) (link to Create ScandiPWA App documentation)

As well as from this documentation:

{% content-ref url="/pages/-MNcP\_Mzb\_fzWwn4SQ1y" %}
[Overriding JavaScript](/developing-with-scandi/override-mechanism/extending-javascript.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MNcRT69Hjndi55WsIsz" %}
[Overriding Styles](/developing-with-scandi/override-mechanism/extending-styles.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MOjieryc8iY8bkRdoj8" %}
[Overriding the HTML / PHP](/developing-with-scandi/override-mechanism/overriding-the-index-file.md)
{% endcontent-ref %}


---

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