7.0 and later, and  Konqueror  3.3.2 and later support the CSS3 box-sizing property.  Gecko-based  browsers such as  Mozilla Firefox  support the same functionality using a  proprietary  "-moz-box-sizing" property, [22]  and  WebKit  browsers such as  Apple Safari  and  Google Chrome  support it as a proprietary "-webkit-box-sizing" property. [23] Posted by Jeoff Wilks