# Custom CSS: customize your CSS to better fit your Theming needs Allow admins to add custom CSS to their Nextcloud instance from inside the Theming settings. ![](https://github.com/juliushaertl/theming_customcss/raw/master/screenshot.png) ## Use theming color values Admin can use CSS custom properties to make use of the variables that are available from the [css-variables.scss](https://github.com/nextcloud/server/blob/master/core/css/css-variables.scss) file: Example: ``` #element { color: var(--color-primary); } ```