How to remove red shadow at form submit button

On this page Kontakt | VIERPARTNER | Kommunikation, PR und Marketing there is a red shadow underneath the submit (Absenden) Button of the contact form, which I would like to remove. In the settings I cannot find a shadow setting nor anything in red, so am not sure where this is coming from or how I can get this red shadow removed.

Hello,

First thanks for using our Moesia Pro theme!

Please try adding the given custom CSS code below at Appearance > Customize > Additional CSS:

.elementor-field-type-submit button {
	box-shadow: none !important;
}

We hope this helps!

Please try that and let us know if you need further assistance.

Kind Regards,

Rodrigo.

aThemes Support