Horizontal Tabs and others

First of all, MANY thanks for such a great theme.

I have few questions, if i may, that i could not find a solution for:
1- How do i display the tabs in the single product page horizontally?
2- How do i restrict next/previous posts to same category?
3- How do i hide the cart icon that shows at the bottom while viewing on Mobile phone?
4- How can i use a different Logo (image) for Mobile viewing?

Thanks.

Using: WP 4.7
WooCommerce: 2.6.9
Theme: StoreFront
Child: Boutique