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+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline-offset width negative values — long box</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="should">
+ <meta name=assert content="Negative values on outline-offset should not cause the height and the width of outside of the shape drawn by the outline to become smaller than twice the computed value of the outline-width property, applying this constrain independenly in each direction.">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+div {
+ width: 100px;
+ height: 100px;
+ /* The borders makes the box rectangular rather than square */
+ border-top: solid white 50px;
+ border-bottom: solid white 50px;
+ background: red;
+ outline: solid 50px green;
+ outline-offset: -100px;
+ margin-top: -50px;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div></div>
+