# Installing it

Installing CSS Pro is easy and just takes 2 minutes or less.

To begin with this tutorial, please [purchase a license key](https://gum.co/csspro) and download the extension from the page you'll be redirected to after purchasing it, or through the link in your receipt (the email you received after buying CSS Pro) or through your [Gumroad library](https://gumroad.com/library). If you can't find it, please download the extension via the [My License](https://csspro.com/my-license) page.

Now, choose the browser you want to install it on:

{% content-ref url="/pages/-MTQdj20hOsfZZxyQ5Rq" %}
[On Google Chrome](/quick-start/installing/on-google-chrome.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MTQeCORYHsdRFgfO\_Ou" %}
[On Firefox](/quick-start/installing/on-firefox.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MTQeVnRl-kY\_Atgmdzn" %}
[On Safari](/quick-start/installing/on-safari.md)
{% endcontent-ref %}


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.csspro.com/quick-start/installing.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.