# Custom CSS

With HurryTimer Pro, you can take control of the appearance of every elements in the campaign using custom CSS.

To add custom CSS, in your campaign settings, navigate to Appearance tab → Custom CSS.

{% hint style="warning" %}
Add .hurrytimer-campaign before the classes and tags you want to target.
{% endhint %}

### Selectors

* .**hurrytimer-campaign:** Campaign container
* **.hurrytimer-timer:** Countdown timer container
* **.hurrytimer-timer-block**: Single countdown timer block container
* **.hurrytimer-timer-sep**: Single separator
* **.hurrytimer-timer-digit**: Single countdown timer digit
* **.hurrytimer-timer-label**: Single countdown timer label
* **.hurrytimer-timer-headline**: Headline


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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.hurrytimer.com/appearance/custom-css.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.