<!DOCTYPE html> <html> <head> <style type="text/css"> #separator { height: 20px; background-color: green; } #float { float: left; width: 50px; margin: 20px 0; background-color: green; } #child { height: 20px; margin: 40px 0; background-color: lightgreen; } </style> </head> <body> <div id="separator"></div> <div id="float"> <div id="child"></div> </div> </body> </html>
