What is the difference between applying css rules to html compared to body?

Question

I don\'t see the difference between:

html {
    background: #f1f1f1;
}

and

body {
    background: #f1f1f1;
}

Answer 1

There shouldn't normally be any difference at all, because those elements are both supposed to be taking up the full screen. It's just like having a div inside some other div. But I think it's more correct to style the body tag, because html isn't really part of the layout.