> For the complete documentation index, see [llms.txt](https://docs.kaliumtheme.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.kaliumtheme.com/general/header/custom-header.md).

# Custom Header

Custom Header type offers a flexible drag-and-drop interface, allowing you to design your header with *12 unique, customizable elements*. Each element comes with its own set of options and can be tailored for visibility across different device viewports. For further customization, you can also apply Custom CSS on element level, giving you full control over its styling.

Once you select the Custom type, the Header Builder section will appear. Clicking on it will take you to the layout builder.

<figure><img src="/files/OIazXohCNFqQnlOSZZyL" alt="" width="325"><figcaption><p>Content sections on header builder</p></figcaption></figure>

* **Left Content**\
  Includes elements positioned to the left of the logo. If left empty, the container will be hidden, resulting in a main row structure with the logo and header elements aligned to the right.
* **Right Content**\
  Includes elements positioned to the right of the logo.
* **Bottom Content**\
  Includes elements positioned below the logo in the bottom row.

Elements can be dragged and repositioned between the above sections. Clicking the :eye: eye icon will toggle its visibility of the element.

To add a new element click :heavy\_plus\_sign: **Add** and the popup with element types will be shown. Disabled elements require certain plugin to be active in order to be enabled.

The following article will detail the purpose and usage of each element.​<br>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://docs.kaliumtheme.com/general/header/custom-header.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.