Migrating my CSS

I am a total amateur at this stuff, so I have come to beg for assistance. I had a site at google sites. I have managed to copy it over to my own server and everything works right except the css. Is there a way to steal my own css and get it to function correctly on my own servers? The site I am working with is:

I have migrated it to:

As you can see, for some reason, the background appears blue and the links appear red. Really, all I want is for the links to be green and the background to be that tan color. I will need to make these changes to all the pages and that’s cool, I just need some guidance on what to do. Thank you for the help in advance.

Thank you very much for the help! I will report back with the results.

Find this in your current css - body{background:#d1e8f6 and replace d1e8f6 with fff1ca. That should sort out the background.

For links and text in your current css file find all C21D0C codes for colours and change it to 007C1F.

For easy finding use Ctrl+F on your keyboard.