Google error message

Hello

I received an email from google warning me that my amp page has an error, which it describes as

“The inline ‘style’ attribute is not allowed in AMP documents. Use ‘style amp-custom’ tag instead.”

. I think it says this problem is on my contact page.
https://www.deltaswan.co.uk/contact-me/?amp

I checked for CSS code on my page – there is none. I also ran the url through the amp validator you recommend. I am immediately out of my depth. It raised even more issues than Google.

Could you tell me where the problem lies, please? If I fix it on the not AMP page does the fix automatically read across to the amp page?

Many thanks

mish

The page I need help with: [log in to see the link]