I’ve read many articles, but I’m not quite sure what is correct today. I want to set the font size properly, but I am not sure what to use.
I’ve seen body { font-size: 100% } and body {font-size: 62.5% }. I have also read that the font-size should be px or not be px.
What would be the correct way to do it today? If IE 6 [is outdated] and 7 are slowly becoming outdated, what would be the best way to set the font to cascade through the web site?
That is very much depending on your personal programming style and preference.
I for myself prefer to set the font-sizes in em. That gives me the advantage that I can adjust all font-sizes in the page, by changing one number in the body.
If you use a font size of 100% or 62.5% is also personal preference and depending on the layout. No one can tell you an optimal value, because no one knows what you personally like and want.