Cross-browser compatibility
From Wiki @ Karl Jones dot com
In web design, cross-browser compatibility refers the relationship between a web page and the web browser displaying the page.
Description
A web page may appear different, behave differently, in different web browsers.
Compatibility refers to consistency in appearance and behave from one browser to another.
Compatibility is a matter of degree of acceptability.
Many different web browsers exists; some will always be incompatible, to some degree.