<style type="text/css">
.box{ width:800px; height:150px; background:#CCC;filter:alpha(opacity=30);opacity:0.3; }
</style>
<br/>
<div class="box">
<div style="position:relative">div的position屬性爲relative,IE認爲包含文字的div脫離了標準流,樣式就不再繼承</div>
</div>
<br/>
<div style="position:relative">
<div class="box"></div>
<div style=" position:absolute;color:#000; left:0px; top:0px">
同級的透明的容器和不透明的容器顯示重疊</div>
</div>