Image px to percentage

-- url of the page with the problem -- : lusmira.esy.es/index.php/mulher/casacos
-- HikaShop version -- : 2.4.0
-- Joomla version -- : 3.4.1
-- PHP version -- : 5.5.21

Good evening.
I wonder if it is possible to change the height / width of the image to percentage .
With px have enough problems of sizes with the resolution of the screen

Hi,

Sure.
You can do that by adding CSS code.
For example, on that page:
.hikashop_product_image_subdiv, .hikashop_product_listing_image, .hikashop_product_image{
width: 50% !important;
height: 50% !important;
}