<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html lang="en" xmlns="http://www.w3.org/1999/xhtml"> <head> <title>CSS Test: Placement of out-of-flow object in elements that have been collapsed through</title> <link rel="author" title="Ian Hickson" href="mailto:ian@hixie.ch"/> <link rel="alternate" href="http://www.hixie.ch/tests/adhoc/css/box/block/margin-collapse/043.html" type="text/html"/> <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins"/> <style type="text/css"> .outer { border-top: solid white; border-bottom: solid 1em red; background: green; } .top { height: 1em; background: white; } .float { height: 1em; float: left; background: white; width: 100%; } .bottom { margin-bottom: 1em; } </style> </head> <body> <p>There should be a single green band below, and no red anywhere.</p> <div class="outer"> <div class="top"> <!-- 1em vertical white space --> </div> <div class="bottom"> <!-- 1em bottom margin collapses to here --> <div class="bottom"> <!-- 1em bottom margin collapses with above --> <div class="float"> </div> <!-- overlaps the bottom border --> </div> <!-- nothing here, bottom margin collapsed upwards --> </div> <!-- nothing here, bottom margin collapsed upwards --> </div> <!-- 1em bottom red border, coincident with white float above --> </body> </html><!-- note. this test assumes that we accept the following proposed changes: http://lists.w3.org/Archives/Member/w3c-css-wg/2003AprJun/0347.html -->