HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <title>background-origin: initial</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      margin: 16px;
      color: #0f172a;
    }

    p {
      margin: 0 0 12px;
      max-width: 40rem;
      line-height: 1.5;
    }

    .box {
      padding: 24px;
      border: 12px dashed #64748b;
      background-color: #f1f5f9;
      background-image: radial-gradient(circle, #2563eb 0 28px, transparent 29px);
      background-repeat: no-repeat;
      background-size: 64px 64px;
      background-position: left top;
      background-origin: content-box;
    }

    .box.reset {
      margin-top: 12px;
      background-origin: initial;
    }
  </style>
</head>
<body>
  <p>The first box is <strong>content-box</strong>. The second uses <strong>initial</strong>, which is the same as <strong>padding-box</strong>.</p>
  <div class="box">content-box</div>
  <div class="box reset">initial</div>
</body>
</html>

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CSS background-origin Property — initial