I have contacted the Theme Author, but for now I resolved to use a plug-in: Contact Form Builder and overwrote some styles.
I mainly work from child themes and think that even when the main theme will be updated, it should not overwrite the validations.
thank you very much for your guidance on this matter 🙂
kind regards
Hi Chris, thank you very much for getting back,
the page is: http://www.roseofdenmark.co.uk/contact/
the theme is: http://themeforest.net/item/eatery-responsive-restaurant-wordpress-theme/3469316
and yes, the contact form is part of the theme.
would it be wider to use an individual plug in?
kind regards