If we include values for the newer font-stretch property in the font shorthand, we should first list a version that omits stretch for browsers that don't support it:
h3 {
font: bold 1.25em Helvetica; /* Older browsers */
font: bold extended 1.25em Helvetica; /* Newer brosers will apply this one */
}We should start with the most conservative declarations, and end up with the most newer declarations.