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PIE (Progressive Internet Explorer) is an IE attached behavior (.htc file) that enables Internet Explorer 6-8 to recognize and display a number of CSS3 properties.

There is almost no difference in coding for the CSS properties. It doesn't require any vendor prefixes (like border-radius rather than -moz-border-radius).

CSS3 PIE

It is simply attached to an element in the CSS file like: behavior: url(PIE.htc); and adds support (full or partial) for the following CSS3 features:

  • border-radius
  • box-shadow
  • border-image
  • multiple background images
  • linear-gradient as background image

And, the missing CSS3 properties are under development.

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