Is it possible to apply CSS to half of a character?
stackoverflow.com
stackoverflow.com
You'll just want the master to be a vector graphic so that you can create multiple scaled raster graphics (e.g. PNGs) to fit different circumstances and usages (since, again, browser support sucks for a lot of vector formats).
3-d block lettering is surprisingly difficult to do
http://caniuse.com/#feat=css3-attr
I've never seen that website be wrong so I'm slightly confused.
CSS Values and Units Level 3 adds the ability to use attr() on any CSS property, not just content, and to use it for non-string values (e.g. numbers, colors).
It's not attr that's unusable, but rather being able to use it on any arbitrary CSS property. Though I'm surprised they don't have a separate entry for just the attr function alone.