Having problems with the theme in mobile version

Hey, I have just recognized that the mobile theme version does not work properly anymore. This is how it looks like: https://prudentwater.com/wp-content/uploads/2021/03/Screenshot_20210305_090802_com.android.chrome.jpg The website: prudentwater.com I have not changed anything or installed another plugin recently. Might you have some explanation for that? Best Regards, Ben