wpt/css/css-backgrounds/border-image-repeat-002.htm at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "https://umn0mtkzgkj46tygt32g.julianrbryant.com/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="https://umn0mtkzgkj46tygt32g.julianrbryant.com/1999/xhtml">
    <head>
        <title>CSS Test: The 'border-image-repeat' property with 'round' as a value</title>
        <link rel="author" title="Microsoft" href="https://umn0mtkzgj43w9rdtvyj8.julianrbryant.com/" />
        <link rel="help" href="https://umn0mtkzgkj46tygt32g.julianrbryant.com/TR/css3-background/#the-border-image-repeat" />
        <link rel="match" href="reference/border-image-repeat-002-ref.html" />
        <meta name="fuzzy" content="maxDifference=0-20; totalPixels=0-2160">
        <meta name="flags" content="image" />
        <meta name="assert" content="This test checks that the 'round' value for 'border-image-repeat' property specifies that the image is tiled (repeated) to fill the sides of the border image area. If it does not fill the area with a whole number of tiles, the image is rescaled so that it does." />
        <style type="text/css">
            div
            {
                border: 40px double red;
                border-image-repeat: round;
                border-image-slice: 27;
                border-image-source: url("support/blue-and-red-diamonds-81x81.png");
                height: 102px;
                margin: 70px;
                width: 102px;
            }

  /*
    102px divided by 40px == 2.55
    Rounding of 2.55 == 3
    So, there must be at least 3 blue squares
    on each horizontal side and on each vertical side.
    102px divided by 3 == 34px
    The 6 blue squares at top and bottom edges
    will each be 34px wide by 40px tall.
    The remaining 6 blue squares at left and right edges
    will each be 40px wide by 34px tall.
  */

        </style>
    </head>
    <body>
        <p>Test passes if there are three whole blue diamonds without clipping on four sides of the border.</p>
        <div></div>
    </body>
</html>