Hi,
You had an override for the view "product / listing" and that custom view had an error.
It was an override from HikaShop 2.3.2 and the error added an extra "</div>" which break a part of the HTML ; due to that tag closure, the CSS was not applied correctly, like the margin one.
So I fixed the view and now the display is correct.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.