I need help with two customizations: one is the currency,

I need help with two customizations: one is the currency, as it is listed USD and I need to be CAD.

Another one is the font - I can't find where to change the font. I added the following code to the custom CSS but it is not working:
.body {
font-family: 'Marcellus+SC', sans-serif;
font-size: 18px;
font-weight: 300;
}

Thanks a lot!
Helena