> Portal Navigation:
> 
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## Resource: $w

## Namespace: captcha

## Article: CSS Classes

## Article Link: https://dev.wix.com/docs/velo/velo-only-apis/$w/captcha/css-classes.md

## Article Content:

<!-- This article was published using the Doc Push single-sourcing tool. Any changes to this article MUST be made in the source file. Find it at www.github.com/wix-private/velo-docs.-->

# Captcha CSS Classes

> **Note:** This feature is only available to Wix Studio users.

You can use the classes listed below
to style your `Captcha` elements with CSS.

For more information on styling your elements with CSS, see
[Styling Elements with CSS]($w/styling-elements-with-css) and the
[MDN CSS reference docs](https://developer.mozilla.org/en-US/docs/Learn/CSS).

<blockquote class="important">

__Important:__
Element structure and undocumented class names
may change without advance warning.
To avoid unintended style changes to your site,
select elements with the documented class names only.

</blockquote>

## `.captcha`

Targets captcha elements.
For example:

```css
.captcha {
  border: 5px solid #d1a917;
  border-radius: 6px;
  filter: drop-shadow(2px 4px 6px black);
}
```