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Editorial Team
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Asked: 2026-05-13T16:40:33+00:00

You can save the code below and try it out. In firefox ,it’s full

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You can save the code below and try it out.

In firefox,it’s full browser grey,but in IE(IE7 to be exact),it’s not working.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<style text="text/css">
.overlay {  
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    z-index:1000;
    background-color:grey;
}
</style>
</head>
<body style="font-size:62.5%;">

<div class="overlay"></div>

</body>
</html>
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1 Answer

  1. Editorial Team

    IE doesn’t recognize the CSS color name grey. Try using a hex color, e.g., #ccc, and it will work. Alternatively, using gray (with an ‘a’, not an ‘e’) also works.

    Note that this is standards-compliant, because W3C doesn’t say anything about supporting alternate spellings of gray, and gray is indeed the color name according to the spec for CSS3.

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