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<!DOCTYPE html>
<html>
<head>
<style>
div { position: absolute; top: 0; left: 0; width: 100px; height: 100px; }
div.offset { left: 100px; }
div.offset2 { left: 200px; }
</style>
</head>
<body>
<!-- Make sure the difference of the two z-index values overflows a 32-bit
signed int. So set the positive one to 2^30 + 1 and the negative one to
-(2^30 + 1). Then the difference is 2^31 + 2 which is negative when
treated as a 32-bit signed int. -->
<div style="background: green; z-index: 1073741825"></div>
<div style="background: red; z-index: -1073741825"></div>
<!-- Test clamping on the high end by setting the high z-index to
2^32 + 1 -->
<div class="offset" style="background: green; z-index: 4294967297"></div>
<div class="offset" style="background: red; z-index: 2"></div>
<!-- Test clamping on the low end by setting the low z-index to
-(2^32 + 1) -->
<div class="offset2" style="background: green; z-index: -2"></div>
<div class="offset2" style="background: red; z-index: -4294967297"></div>
</body>
</html>
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