You can customize header shopping cart element function and style in theme options panel -> Header -> Shopping Cart Element.

Custom Cart Icon: You can upload your custom cart icon image. Original cart icon is a homemarket theme cart icon font.
Cart Icon Function: Change click functionality of cart icon.
Shopping Cart View Position: Change Mini Cart view style, if cart function is “Mini Cart”.
View Mini Cart Box After Ajax Cart: Show/Hide mini cart box after ajax add to cart.
Cart Icon View Style: Change header cart icon style or hide it.