Css changes - where to find in the css code? text size - price, text color in shopping cart text,

[teriff]

hi there I have made som changes in both layout and css code but there is some thing I can not find - www.ji-style.com

1) For example where to change color of the text inside the shopping cart / special box / my account
2) Where to change font size of price on product pages
3) how to add a "buy button" bellow the "view" button
4) how to get the product name below the picture not like 20px above


If you know any of this 4 css changes and where to find them plz advice

Best regards and a big thanks in advance //