Just wondering if anyone knows whether it is possible to format the content of an element as currency using only CSS. It would be nice to have how the value is presented in
If you're asking about number formatting in CSS (that is, parsing a number from a string and then formatting it with thousands separator, decimal separator, fixed decimal digits number etc), then no, it is impossible in CSS, and this is not what CSS was designed for.
If you want to do any formatting, then you'd better to use XSLT. For example:
$