Why doesn't CSS `area:hover` work to style my HTML image map areas?

Sure, here is a properly formatted version of the article:

How to apply Hovering on html area tag?

Question:

I am trying to hover the area tag of HTML. I tried this in CSS:

area:hover
{
  border:1px solid black;
}

This is the HTML on which it should be applied.

<!-- This imagemap inserted by Gwyn's Imagemap Selector http://gwynethllewelyn.net/gwyns-imagemap-selector/ -->
<img src='http://dailyaeen.com.pk/epaper/wp-content/uploads/2012/09/27+Sep+2012-1.jpg?1349003469874' usemap='#imgmap_css_container_imgmap201293016112'>

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