> For the complete documentation index, see [llms.txt](https://nextsky.gitbook.io/agile-theme/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nextsky.gitbook.io/agile-theme/theme-setting/custom-css.md).

# Custom CSS

To customize the theme's style via CSS without editing theme files, you'll need to have knowledge of programming languages.

<figure><img src="https://2603381870-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FzHrRp9fYeFj0SVV6k2dP%2Fuploads%2Fv9iVrzNUmxz8HqotUcxh%2Fimage.png?alt=media&amp;token=d84c147f-9401-4ca9-bde3-9422dfecbbaf" alt=""><figcaption></figcaption></figure>