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<!DOCTYPE html> <html> <head> <style type="text/css"> .float, .float + div { float: left; height: 200px; width: 100px; background: #ccc; } .float + div{ float:right; } #bg { background: #999; height: 100px; } </style> </head> <body> <div class="float"></div> <div></div> <div id="bg"></div> </body> </html>