> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt ## Resource: $w ## Namespace: rich-text-box ## Article: CSS Classes ## Article Link: https://dev.wix.com/docs/velo/velo-only-apis/$w/rich-text-box/css-classes.md ## Article Content: # Rich Text Box CSS Classes > **Note:** This feature is only available to Wix Studio users. You can use the classes listed below to style your `RichTextBox` 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).
__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.## `.rich-text-box` Targets rich text box elements. For example: ```css .rich-text-box { display: block; padding-left: 50px; } ``` ## `.rich-text-box__input` Targets rich text box input boxes. For example: ```css .rich-text-box__input { font-family: sans-serif; font-weight: 700; color: black; } ``` ## `.rich-text-box__toolbar` Targets rich text box toolbars. For example: ```css .rich-text-box__toolbar { fill: #FF0000; } ``` ## `.rich-text-box__icon` Targets rich text box icons. For example: ```css .rich-text-box__icon { border-radius: 50%; box-shadow: 5px 5px 10px; } ```