OK, I am using CSS to define basic font properties of my site in an external CSS file. I have ran into 2 basic problems.

1. I can't globally set font properties. This doesn't really matter but when I set font properties outside of a tag, they dont work. To correct this, I just put them in the body {} properties.

2. Font sizing doesnt work in the body {} properties. It wont take 10 pt as a font size, it always shows up as standard 3 size. My code is this:

Code:
body {
    font-family: Arial, Helvetica, Sans-Serif;
    font-size: 10 pt;
}
But no matter what, the font size doesn't change. What is up?