HTML редактор

<!doctype html>
<html lang="ru">

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>background-origin</title>
  <style>
    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

html {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    }

div {
      width: 300px;
      height: 300px;
      margin: 20px auto;
      border: 20px solid rgba(0, 0, 0, 0.3);
      padding: 20px;
      background-image: url('/examples/images/image-02.jpg');
      background-repeat: no-repeat;
      background-size: cover;
    }

.border-box {
      background-origin: border-box;
    }

.padding-box {
      background-origin: padding-box;
    }

.content-box {
      background-origin: content-box;
    }

h2 {
      text-align: center;
    }
  </style>
</head>

<body>

<h2>border-box</h2>
  <div class="border-box"></div>

<h2>padding-box (по умолчанию)</h2>
  <div class="padding-box"></div>

<h2>content-box</h2>
  <div class="content-box"></div>

</body>

</html>