I work with a lot of kernel dev type people, you may find it hard to imagine but there are a lot of people that only program in c, maybe python.
I even know a lot of fortran only programmers. If you think html and css are common you might want to expand your scope of programmers, there is a lot of people that don't need or want to know about web programming.
I even know a lot of fortran only programmers. If you think html and css are common you might want to expand your scope of programmers, there is a lot of people that don't need or want to know about web programming.