# Introduction to Site themes development

With Ecwid, you can build a website tailored to your business needs, whether or not they require an online store. The website builder called **Instant Site** offers many tools for creating a truly unique multipage and multilingual site. Read more about its built-in features in the [Help Center](https://support.ecwid.com/hc/en-us/articles/207100069-What-is-Instant-Site).

If you want to customize your website even more, you can use dev tools to build **Site themes** or **Sections:**

* **Site themes** allow you to completely overhaul your website's look and feel. Or even offer website designs to all Instant Site users through the theme market. Get started easily with the [Broken mention](broken://pages/U6m5mqE1buf2B1fMg4Vx)
* **Sections** are building blocks for any Instant Site page. You can create **custom sections** that can be used as a part of a Site theme or as a standalone customization, for example, an animated product promo card. Learn [How to use sections without Site themes](/site-themes/develop-custom-sections/how-to-use-sections-without-site-themes.md)

Incorporate any features and designs into templates, focusing on specific business niches or use cases. For example, add custom widgets, third-party integrations, and unique layouts that are unavailable within the default functionality.

The themes in the market are offered as a paid feature, giving you the chance to earn money from your efforts. Ecwid handles all billing and distribution, allowing you to stay focused on your work. [Launch Site themes](/site-themes/launch-site-themes/technical-guide-for-publishing-site-themes.md)

Collection of Site themes available in the website editor:

<figure><img src="/files/PH9fYjSd9yoj6mxMIpAE" alt=""><figcaption></figcaption></figure>


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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.ecwid.com/site-themes/introduction-to-site-themes-development.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.