Hello,
we need just to zoom the photo
I do understand you. But there is no such option for the image tag that is used in the tabs content field. You need to build the tab content in a different way (using Static block inside the tab content. Static block that includes images gallery element not the simple list of the image tags). Or use any additional Elementor Addon for example ElementsKit, that allows adding images gallery with the zoom lightbox to tabs using Advanced Tabs element.
2) I removed the previous header for the home page and created the new one using default header template that you have http://recordit.co/5gJliIKNaK
Check now.
Regards