>> Jeg har målt mig frem til at 20 PKT ligger omkring 11 eller 12 pixels
Det passer på ingen måde , px unit er relativ til skærmopløsningen (og browser)
Se
http://www.thenoodleincident.com/tutorials/box_lesson/font/singles/px.htmlhttp://www.thenoodleincident.com/tutorials/box_lesson/font/index.html------------
Pixel units are relative to the resolution of the viewing device, i.e., most often a computer display. If the pixel density of the output device is very different from that of a typical computer display, the user agent should rescale pixel values. It is recommended that the reference pixel be the visual angle of one pixel on a device with a pixel density of 96dpi and a distance from the reader of an arm's length. For a nominal arm's length of 28 inches, the visual angle is therefore about 0.0213 degrees. A single pixel viewed in that reference frame would approximate0.26mm in length. Pixel units are relative to the resolution of the viewing device... With this in mind, .px may be the most portable unit of measure across devices. Absolute length units are only useful when the physical properties of the output medium are known. The absolute units are:
in: inches -- 1 inch is equal to 2.54 centimeters.
pt: points -- the points used by CSS2 are equal to 1/72th of an inch.
pc: picas -- 1 pica is equal to 12 points.
http://www.bigbaer.com/css_tutorials/css_font_size.htm-----------------
se også
http://www.w3.org/TR/REC-CSS2/fonts.html