Hello, Fantasy Prints,
In order to resolve your issue, we suggest that you remove the padding that you have set for the bottom header under XStore >> Header Builder. Please refer to the screenshot provided for further reference: https://postimg.cc/dL2hZvfd
We have tested your site on our personal mobile phone and it is working perfectly fine. Please refer to the video provided as a reference: https://www.veed.io/view/b521210e-4a1a-4ebc-a7f5-cec900ff8723?sharingWidget=true&panel=share. We believe this may be a cache issue at your end, so please try to clear the cache and check back again.
We hope this information is helpful.
Best Regards,
8Theme’s Team