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What is the use of star-preceded property in CSS ?

  • Last Updated : 29 Jan, 2020

It is a simple hack also known as the ‘* property hack’. It is useful when it comes to dealing with the older versions of Internet Explorer (i.e. IE6 and IE7). When we add * before any property name in CSS, it targets IE 7 and below version of IE browsers and reflects when loading the same CSS on the browser while it acts as junk for all other browsers including IE 8 and above.

Note: We can use underscore (_) for IE6 and the star (*) for IE7. Add _ or * in front of a CSS property when required.

Syntax:

color: blue;    /* all browsers */
*color: blue;   /* IE7 and below */
_color: blue;   /* IE6 and below */

Below example illustrate the star-preceded property in CSS:

Example: In this example, we will see how an element preceding with a * behaves differently for different versions in IE. We can see that for element h1 we have added the property color beginning with a *.




<!DOCTYPE html>
<html>
<head>
    <style>
        p {
            background-color: pink
        }
           
        h1 {
            *color: green
        }
    </style>
</head>
   
<body>
    <center>
        <h1>GeeksforGeeks</h1>
        <b>
            A Computer Science Portal
            for Geeks.
        </b>
        <p>
          This is an example for
          star-preceded property
        <p>
    </center>
</body>
   
</html>

Note: It is a kind of bug and it will only works for IE7 and below.
Output:

  • Output For IE 7 and below: We can see that our h1 property with text GeeksforGeeks is green in color thus, *property name is excepted by this browser version.
  • Output For IE 8 and above: We can see that our h1 property with text GeeksforGeeks is black in color showing that *property name is treated as junk in browser IE 8 and above.
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