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Diffstat (limited to 'testing/web-platform/tests/css/CSS2/margin-padding-clear/margin-backgrounds-002.xht')
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diff --git a/testing/web-platform/tests/css/CSS2/margin-padding-clear/margin-backgrounds-002.xht b/testing/web-platform/tests/css/CSS2/margin-padding-clear/margin-backgrounds-002.xht new file mode 100644 index 0000000000..75c0211ca4 --- /dev/null +++ b/testing/web-platform/tests/css/CSS2/margin-padding-clear/margin-backgrounds-002.xht @@ -0,0 +1,58 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> + +<html xmlns="http://www.w3.org/1999/xhtml"> + + <head> + + <title>CSS Test: transparency of margin area and background-color</title> + + <link rel="author" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> + <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#mpb-examples" title="8.2 Example of margins, padding, and borders" /> + <link rel="help" href="http://www.w3.org/TR/CSS21/colors.html#background" title="14.2 The background" /> + <link rel="match" href="../reference/ref-filled-green-100px-square.xht" /> + + <meta content="The margin area of an element is always transparent. The background-color of an element never paints its own margin area. The background-color of an element only paints its own border area (if any), its own padding area (if any) and its own content area (if any). Therefore the background-color of the content area (and of the padding area, if any, and of the border area, if any) of a parent element shines through the margin area of its child. In this test, div#parent is painted green and is 100px by 100px; its sole child has an 99px margin bottom and a 100px margin right margin which are transparent and through which we can see the background color of its parent." name="assert" /> + + <style type="text/css"><![CDATA[ + p {margin: 1em 0em;} + + div#parent + { + background-color: green; + height: 100px; + width: 100px; + } + + div#child + { + background-color: red; + height: 1px; + /* + 'height: 1px' is set intentionally so that the + top margin (16px) and bottom margin (99px) of such child + box do not collapse through the element. + */ + margin: 16px 100px 99px 0px; + /* + 'margin-top: 16px' correspond to the margin-bottom of the + <p>. The margin-top of the child box collapses with the + margin-top of div#parent and then the collapsed margin-top + of div#parent then collapses in its turn with the + margin-bottom of the <p>. + */ + width: auto; + } + ]]></style> + + </head> + + <body> + + <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> + + <div id="parent"> + <div id="child"></div> + </div> + + </body> +</html>
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