Actually, I believe ems are based on the prior font-size of the element in which its contained. rems are based on body. For example, If you have a div in the body with no font-size set and a span inside that div with font-size set to 120% then it will be 120% of the body font-size. However, if the div has a font-size of 110%, then the span would have a font-size that is 120% of 110% the divs calculated font-size would be of the body font-size. Stay with me.. :)
Example 1: <Body font-size = 16px <div font-size = none set <span font-size (120%) = 19.2px Example2: <Body font-size = 16px <div font-size (110%) = 17.6px <span font-size (120%) = 21.12px Please someone correct me if I am wrong. HTH, Best, Karl DeSaulniers Design Drumm http://designdrumm.com ______________________________________________________________________ css-discuss [css-d@lists.css-discuss.org] http://www.css-discuss.org/mailman/listinfo/css-d List wiki/FAQ -- http://css-discuss.incutio.com/ List policies -- http://css-discuss.org/policies.html Supported by evolt.org -- http://www.evolt.org/help_support_evolt/