<!DOCTYPE html> <html> <head> <style type="text/css"> .separator { height: 20px; margin-bottom: 30px; background-color: green; } #caption { width: 100px; height: 20px; margin-bottom: 30px; background-color: blue; } </style> </head> <body> <div class="separator"></div> <div> <div id="caption"></div> </div> <div class="separator"></div> </body> </html>