How can I calculate the size of fonts with em lengths?
There are some additional notes on the em and ex length units in the CSS font-family glossary. The key thing to be aware of with these proportional length units is that the pixel dimensions of fonts rendered on screen will depend on the default font size setting for the browser and any custom size setting made by the user. This is actually one of the great advantages of font-based length units; they will adjust to users’ preferences. You can also use the same length units to size your page layouts proportionally. Actions: Follow-up, clarify or correct this answer. Submit a new question.
There are some additional notes on the em and ex length units in the CSS font-family glossary. The key thing to be aware of with these proportional length units is that the pixel dimensions of fonts rendered on screen will depend on the default font size setting for the browser and any custom size setting made by the user. This is actually one of the great advantages of font-based length units; they will adjust to users’ preferences. You can also use the same length units to size your page layouts proportionally. Actions: Follow-up or correct this answer. Submit a new question.
