Css- rgb color

[ffej]

I have an external css stylesheet and am wanting to add a background-color with rgb color. I can only get a background-color when I use the color name. I don't get it.

 

Body {background-color: rgb (100. 100. 90) ; }

Doesn't work. I just learning but

...driving me crazy.

[hrci]

try write it like this rgb(100, 100, 90), u can ad also rgba (100,100,90, 0-1) where 0-1 can be like 0.2 or 0.7where that number from 0-1 will be opacity for the color/image of the background

[dsonesuk]

This is a duplicate posting http://w3schools.invisionzone.com/index.php?showtopic=54991#entry301603