# Components

ReallySimpleDocs includes a small set of MDX components for docs pages that need more than plain Markdown.

Use `.mdx` when a page needs callouts, previews, tabs, setup steps, or card grids.

- [**Callout**: Notes and warning messages.](/components/callout/)

- [**Card**: Grouped links and compact concept cards.](/components/card/)

- [**Code**: Single and tabbed code examples.](/components/code/)

- [**Preview**: Rendered examples paired with source code.](/components/preview/)

- [**Steps**: Numbered setup and installation flows.](/components/steps/)

- [**Tabs**: Basecoat tabs for arbitrary content variants.](/components/tabs/)