firefox - Safari sending floated div to new line, chrome and IE are fine -
the situation:
parent div: 300px
child 1: 50px width, 5 px border
child 2: 232px width, 8px margin left
works fine in chrome , ie, safari , firefox drop second 1 new line. reason this? if remove 1 px overall, having 7px left margin, fit place. also, measurements match in firebug, don't see why thew 2 not fitting in same line.
try removing other padding or margin parent div , children. these caused default browser styles. (or use css reset elements)
also, note, safari , opera little bit lying measurements if have decimal number. round or down, not exact firefox or chrome.