<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html style="position:relative; height:50%;"><head><title>CSS Test: Test for containing block for absolutely positioned elements being initial containing block</title>
<link rel="author" title="Robert O'Callahan" href="mailto:robert@ocallahan.org">
<link rel="author" title="Mozilla Corporation" href="http://mozilla.com/">
<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#containing-block-details">
<link r