Hello, i have a small problem, my images have large gaps of space between the edges and the text.

Is there a setting in admin for this, or will i have to manually adjust this through css.
I have a custom template , but does anyone have any ideas of tags that i can look up in my CSS sheets to get an idea of where these settings are located?
Im not great with manual coding
Thank you
p.s my site www.platinumhardware.co.uk