<html>
	<head>
		<style>
		div {
			margin: 0px;
		}

		.container {
			border: thin solid blue;
			width: 300px;
		}

		.block {
			background-color: green;
			margin-top: 4px;
			margin-bottom: 6px;
			border: 1px dashed black;
			-webkit-writing-mode: horizontal-bt;
		}

		.self_collapse {
			margin-top: 2px;
			margin-bottom: 4px;
			height: 0px;
		}

		.collapse_top {
			-webkit-margin-top-collapse: collapse;
		}

		.collapse_bottom {
			-webkit-margin-bottom-collapse: collapse;
		}

		.collapse_top:before, .collapse_bottom:after {
			content: "Collapse";
		}

		.discard_top {
			-webkit-margin-top-collapse: discard;
		}

		.discard_bottom {
			-webkit-margin-bottom-collapse: discard;
		}

		.discard_top:before, .discard_bottom:after {
			content: "Discard";
		}

		.separate_top {
			-webkit-margin-top-collapse: separate;
		}

		.separate_bottom {
			-webkit-margin-bottom-collapse: separate;
		}

		.separate_top:before, .separate_bottom:after {
			content: "Separate";
		}
		</style>
	</head>
	<body>
		<p>Test for <a href="https://bugs.webkit.org/show_bug.cgi?id=108168">Implement the -webkit-margin-collapse properties correct rendering</a>.</p>
		<p>This ref test covers basic collapsing behavior between sibling boxes when using -webkit-margin-collapse. The blocks have lr-bt writing mode.</p>
		<div class="container">
			<div class="block collapse_top collapse_bottom"><br/></div>
			<div class="self_collapse"></div>
			<div class="block collapse_top collapse_bottom"><br/></div>
			<div class="self_collapse"></div>
			<div class="block separate_top collapse_bottom"><br/></div>
			<div class="self_collapse"></div>
			<div class="block discard_top discard_bottom"><br/></div>
			<div class="self_collapse"></div>
			<div class="block collapse_top discard_bottom"><br/></div>
			<div class="self_collapse"></div>
			<div class="block separate_top discard_bottom"><br/></div>
			<div class="self_collapse"></div>
			<div class="block discard_top separate_bottom"><br/></div>
			<div class="self_collapse"></div>
			<div class="block collapse_top separate_bottom"><br/></div>
			<div class="self_collapse"></div>
			<div class="block separate_top separate_bottom"><br/></div>
			<div class="self_collapse"></div>
			<div class="block discard_top collapse_bottom"><br/></div>
		</div>
	</body>
</html>