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Test Info:

<!DOCTYPE html>
<head>
<style type="text/css">
#div1:before { content: "PASS1"; }
#div2:before { content: "FAIL2"; content: "PASS2" }
#div3:before { content: "FAIL3"; content: normal; }
#div4:before { content: normal; content: "PASS4"; }
#div5:before { content: "FAIL5"; content: none; }
#div6:before { content: "PASS6"; content: none none; }
#div7:before { content: "PASS7"; content: normal none; }
#div8:before { content: "PASS8"; content: none normal; }
#div9:before { content: "PASS9"; content: "FAIL8" none; }
#div10:before { content: "PASS10"; content: no-open-quote none; }
#div11:before { content: "FAIL11"; content: no-open-quote no-close-quote; }
#div12:before { content: "PASS12"; content: none "FAIL12"; }
</style>
</head>
<body>
<div id="div1"></div>
<div id="div2"></div>
<div id="div3"></div>
<div id="div4"></div>
<div id="div5"></div>
<div id="div6"></div>
<div id="div7"></div>
<div id="div8"></div>
<div id="div9"></div>
<div id="div10"></div>
<div id="div11"></div>
<div id="div12"></div>
</body>
</html>