Is it possible to do mathematics inside CSS?

Question

I have jquery accorion id #accordion and some of the content inside header class name .simpleColor. Now I want to give a calculated margin to .simp

Answer 1

jQuery('.simpleClass').css('margin-left', (jQuery('#accordian').width() / 2) - (jQuery('.simpleColor').width() / 2) + 'px');

Should do what you are wanting. But you need to do something like this in javascript, you can't do it in pure CSS unless the widths for #accordian and .simpleColor are known in advance (and thus calculated in advance).