my css disappears in the mobile version

Hi, I have all my site complete and when I open the inspector from google everything is ok, but when I try to see the site from my phone is like the page was taking another css.
Hope you can help me.
thank you so much

I put a picture to show you what happen when I open the site from my phone.

but the real site, my page is this one

Hi @aidabn,

I hope you are well today and thank you for your question.

It seems this is happening because of Mobile Theme module of Jetpack plugin so could you please try deactivating this module on your site?

Best Regards,