How to remove the background from the dropdown options?

How to remove the background from the dropdown options?

Are you referring to this Form in your account?

https://www.jotformeu.com/form/91484003742352

If yes, then please inject the following CSS code in the FormDesigner:

option {
 background: transparent;
}

To inject custom CSS please follow this guide:

https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes

Let us know if you have further questions.

Thanks