how to make the products listing image bigger and align to center

-- HikaShop version -- : 5.0.4
-- Joomla version -- : 3.0.12
-- PHP version -- : 7.4
-- Browser(s) name and version -- : google chrome

Hi：

Now the images looks not weel, too small and not clear,
so i want to them bigger like 400px width ,now they are 200px,at the same time need them to align to center ,now seems like left.
need you help,
thank you very much.

when i set the image width to 400px ,but the images exceed the border ,so how can i set the border size bigger.
i changed the pane height, not work.

thank you very much.