Am 13.01.2013 20:09, schrieb Tedd Sperling:
On Jan 13, 2013, at 12:35 PM, Kuzeko Web Design - Matteo Lissandrini 
<w...@kuzeko.com> wrote:

I would like to work on my new project building Responsive layouts making
use of flexible em-based media queries instead of pixel based.

-snip-

So, is there any new findings on the subject, or is just as simple as
converting a couple of numbers? (I'm oversimplifying here, but not that
much apparently)

Did you tried this approach, is there anything I should pay attention to?


Kuzeko:

I think that is an excellent move. It allows the people with aging vision to 
see things enlarged, here's an example:

http://sperling.com/examples/zoom/

Additionally, here is something that helped me -- when converting from pixels 
to em simply divide by 16.

For example, an image that is 16 pixels wide is also 1 em wide.

I doubt that. em is a unit relative to the current font size. http://en.wikipedia.org/wiki/Em_%28typography%29 says: "Thus, em generally means the point size of the font in question." So if for one particular font size 1em is 16 pixels, for a font twice as big 1em might be rather about 32 pixels.

Best

Christian
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