split-opacity-layers-1-ref.html

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<!DOCTYPE HTML>

<html>

<body>

  <div style="width:400px; height:500px; overflow:hidden; border:2px solid black">

    <div style="height:450px"></div>

    <div style="height:100px; width:200px; float:left; background:purple"></div>

    <div style="opacity:0.5">

      <div style="left:200px; top:0; height:800px; width:300px; float:left; background:yellow; position:absolute; z-index:1;"></div>

      <div style="height:100px; width:200px; float:left; background:purple; position:relative; z-index:2;"></div>

    </div>

  </div>