Hello, Manish Singh,
Thank you for getting in touch with us.
1/ You can add the next code in Theme Options > Theme custom CSS > Mobile:
.et-advance-tabs .et-tabs-content>div {
padding: 0px !important;
}
2/ It is the correct behavior for variable products.
3/ “Lastly, the spinner is getting to 0 (Zero) which I think should not go below 1” – please provide a video or screenshot, currently your request is a bit unclear to us.
Thank you for your cooperation and we look forward to hearing from you soon.
Kind Regards,
8theme team