Own style to Column Grid?????

[jagge]

Hi!
I´m totally losing it soon. I have tried for 2 days now to get my own look at Column Grid Layout.
I need help!!!!

I have a custom template installed and I have tried to change in the css of that template and also default template but nothing happens with the style of product listing in column grid??

Can someone please point me in the right direction? Which file shall be changed? Does the column grid module point to any css at all or where does it get its style from? I cant find anything in product_listing that makes any different. I´m quite a neewbie at this stuff.

i´m going mad if I cant fix this so please help me!

I want to put my own style at header

See attached file for more info.

Best regards,
Ola