Hello,
1) Try to add the next code in Theme Options > Theme custom CSS > Custom CSS for desctop:
.main-products-loop .products-list .product {
display: flex;
}
.products-list {
display: flex;
flex-wrap: wrap;
flex: 1;
}
.products-list .content-product {
justify-content: space-between;
display: flex;
flex: 1;
}
2) Theme Options > Theme custom CSS > Custom CSS for mobile:
.products-list .content-product .quantity-wrapper {
width: 100% !important;
justify-content: center;
}
3) Yes, it is correct, because the List view shows 2 products for desktop, by default. You can change columns for the grid view only, for example, here is 3 columns – http://prntscr.com/11sgj33
5) Custom CSS for mobile:
.shop-full-width .main-products-loop .products-list .product {
width: 50% !important;
}
4) Theme Options > WooCommerce > Shop > Products style > Hover buttons on mobile
Regards
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