link-rel-attribute-ascii-case-insensitive-notref.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>link element rel is ASCII case-insensitive (mismatch reference)</title>
<link rel="stylesheet" href="stylesheet.css">
<p>Test passes if background is not red.</p>

chromium/third_party/blink/web_tests/external/wpt/html/semantics/document-metadata/the-link-element/link-rel-attribute-ascii-case-insensitive-notref.html