<!doctype html> <html lang=en> <meta charset=utf-8> <title>CSS-UI test: outline-color:invert</title> <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net"> <meta name=flags content=""> <meta name=assert content="outline-color:invert must do pixel-level color invertion OR fail to parse, in which case the initial value must be currentcolor"> <link rel="match" href="reference/outline-006-ref.html"> <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props"> <style> body > div { width: 100px; height: 100px; display: table-cell; /* Make a BFC */ background: rgb(255,128,255); /* inverse of rgb(0,127,0) */ } div > div { color: rgb(0,127,0); background: rgb(0,127,0); margin: 25px; width: 50px; height: 50px; outline: solid 25px; outline-color: invert; } </style> <p>Test passes if there is a filled green square and <strong>no pink</strong>.</p> <div><div></div></div>