css/css-values/calc-background-image-gradient-1-ref.html

<!DOCTYPE HTML>
<html>
<head>
  <title>CSS Reference: Test for calc() on background-image gradients</title>
  <link rel="author" title="L. David Baron" href="https://dbaron.org/">
<style type="text/css">

p {
    height: 50px; width: 200px;
    border: thin solid;
}

#one { background-image: radial-gradient(circle farthest-side at 150px 20px, red, green); }

</style>
</head>
<body>
<p id="one"></p>
</body>
</html>