Product with multiple images

-- url of the page with the problem -- : www.kasias.nl/hikashop-menu-for-products...rpark-sportzentrum-i
-- HikaShop version -- : 3.4.0
-- Joomla version -- : 3.8.5
-- PHP version -- : 5.6.33
-- Browser(s) name and version -- : Chrome
-- Error-message(debug-mod must be tuned on) -- : no

When I try to add multiple images to my product on the frontend there is a huge piece of white before you see the thumps of both images
What am i doing wrong?

Thanks in advance