#page-header, #page-footer, #page-body { 
	background: #eee;
}
#page-header-wrapper, #page-footer-wrapper, #page-sidebar-wrapper, #page-content-wrapper {
	background: #ccc; 
}

#page-header:before, #page-footer:before, #page-sidebar:before, #page-content:before {
	position: absolute; top: 0px; right: 0px; color: #ccc;
}
#page-header:before { content: 'HEADER'; }
#page-footer:before { content: 'FOOTER'; }
#page-sidebar:before { content: 'SIDEBAR'; }
#page-content:before { content: 'CONTENT'; }