title: How big in 1pt?
body: <p>i really need to know this. Everyone (hopefully) knows that dpi dont matter on the web, it doesnt matter if you save and image with 4000 or just 1 dpi, you computer just shows it point to pixel.
  Now, what about css and font size in pt? Many websites say that windows uses 96 dpi and mac 72 what means that 1 pt on mac is 1 px and on windows 1,333 px.
  But this makes no sense, the os has nothing to do with any resolutions, only the screen has PPI, not dpi. And the ppi depend on the screen. </p>
  
  <p>Is it true that 1pt is 1px on mac and 1,333px on pc?</p>