Problem with mobile layout

I have a problem with the mobile layout.
When you visit the site on smartphones, the layout is no color, images and theme structure appears completely white with links of various menus in blue.
After all, there is a link “view entire site”, and selecting the link opens the correct version.
To verify the site is www.giorri.it.
Thanks for your help.

Hi,

Looks like its caused by the Jetpack plugin, please try to deactivate the plugin.
If the issue still exist, please try to deactivate non-theme-required plugins and let see which plugin causing it.

Regards,
Awan