<!DOCTYPE html>
<html>
<meta charset=utf-8>
<title>COLRv1 font test: radial gradient with degenerate color line</title>
<style>
p { margin: 0; }
div { height: 100px; position: relative; }
/* Use CSS backgrounds to imitate the expected CAhem glyph rendering.
   Antialiasing will differ, but otherwise the results should match. */
span { display: inline-block; height: 40px; position: absolute; overflow: clip; }
span.bg { width: 100px; top: 30px; background: red; }
span.a { background: blue; border-radius: 20px; left: 30px; width: 200px; }
span.b { background: blue; border-radius: 20px; left: 10px; width: 200px; }
span.c { background: blue; border-radius: 20px; left: 50px; width: 200px; }
span.d { background: blue; border-radius: 20px; left: 60px; width: 200px; }
</style>

<div><span class=bg><span class=a></span></span></div>
<div><span class=bg><span class=b></span></span></div>
<div><span class=bg><span class=c></span></span></div>
<div><span class=bg><span class=d></span></span></div>