property" />
  <link rel="match" href="../../reference/ref-filled-green-100px-square.xht" />

  <meta name="flags" content="image" />
  <meta name="assert" content="When 'background-size' is 'cover', then the background-image is scaled, while preserving its intrinsic aspect ratio (it is 1:1 in this test), to the smallest size such that both its width and its height can completely cover the background positioning area. When 'background-size' is 'contain', then the background-image is scaled, while preserving