process-stylesheet-linked-resource-ascii-case-insensitive-ref.html

<!DOCTYPE html>
<meta charset="utf-8">
<style>
p:after { font-weight: bold; }
p:after { content: "PASS"; color: green; }
</style>
<p>text/css treated as CSS?
<p>TeXt/CsS treated as CSS?
<p>text/cſs ignored?