print label from web browser

Hi there,

 

I hope this is the right list to ask this question.

 

I'm developing a web page with mysql & php that allows users to print
continuous label (7.5x3.5in) on dot matrix printer.  Someone suggested that
I ask this question on this list because it seems to be that css is the
answer, but I don't know where to start.  Can someone give me some ideas how
to do this?  I'm a newbie on css.

 

Thank you so much,

T. Hiep