the body call . . .

font:normal 86%/160% verdana,geneva,helvetica,sans-serif;

There is no font size in px set in the body{ for which this call then sets to 86% with a line heigth of 160% (?)

Isn't the original body font size set as px (ie., 12px) and then the 86%/160% takes over from there on?

All the rest of my font measurements in my CSS stylesheet are in px. Should they be in em's?

Below - both of these are width declarations however one is in px the other in em's.
Is it because the min-px measurement sets an absoloute minimum for a viewport and the max allows for larger viewports?

min-width:752px;
max-width:96em;

How does viewport diaganal size and screen resolution settings effect all of this?

I researched here. :http://kyleschaeffer.com/best-practi...s-px-vs-pt-vs/


Thanks much . . . Rick