<!DOCTYPE html> <link rel="stylesheet" href="test-common.css"> <style type="text/css"> @counter-style a { system: extends upper-roman; prefix: "Appendix "; } section { counter-reset: p -3; } p { counter-increment: p; } p::before { content: counter(p, a); } </style> <ol start="-2" style="list-style-type: a"> <li><li><li><li><li> </ol> <section> <p><p><p><p><p> </section>