Box Sizing Test

div {
	width:15em;
	padding:1em 2em;
	border:0.5em solid black;
	margin:2em;
}
No particular box-sizing defined
W3 box-sizing:content-box
'content-box' should be this wide, including borders
Moz -moz-box-sizing:content-box
W3 box-sizing:padding-box
'padding-box' should be this wide, including borders
Moz -moz-box-sizing:padding-box
W3 box-sizing:border-box
'border-box' should be this wide, including borders
Moz -moz-box-sizing:border-box