HTML中的area标签如何添加边框或背景色
<map name="Map" id="Map">
<!--1楼-->
<area id="jtid_98" alt="1-01" href="show.html" coords="342,671,387,704" shape="rect">
<area id="jtid_100" alt="1-02" href="show.html" coords="495,672,557,703" shape="rect">
<area id="jtid_101" alt="1-03" href="show.html" coords="740,673,803,702" shape="rect">
<area id="jtid_103" alt="1-04" href="show.html" coords="907,672,955,703" shape="rect">
</map>
想给area标记的地方加框或者背景色,用来突出这是重点区域,求好的办法!