CSS syntax error in tag ‘style amp-custom’.

Hello @fooey

Thank you for the support topic, Can you please share your site URL or use AMP->Support to send us your site health info and share UUID with us

So we can investigate the issue and provide your better assistance.

Hello @fooey

Thank you for the site info, As we checked your site on AMP validator.

We did see a warning about invalid CSS, but we can’t be sure about the source of it.

We will recommend checking your child theme’s CSS or plugins that are adding CSS

Try to locate the following CSS which is invalid.

@media none{h1,h2,h3,h4,h6{overflow-wrap:break-word}

However, you can ignore it as it’s a CSS warning, and doesn’t affect AMP or AMP validation.

Hope this helps!