http://line25.com/tutorials/how-to-create-flat-style-breadcrumb-links-with- ss

bread.css

#crumbs ul li a {
  display: block;
	float: left;
	height: 50px;
	background: #3498db;
	text-align: center;
	padding: 30px 40px 0 40px;
	position: relative;
	margin: 0 10px 0 0; 
	
	font-size: 20px;
	text-decoration: none;
	color: #fff;
}

#crumbs ul li a:after {
  content: "";  
	border-top: 40px solid red;
	border-bottom: 40px solid red;
	border-left: 40px solid blue;
	position: absolute; right: -40px; top: 0;
}

#crumbs ul li a:before {
  content: "";  
	border-top: 40px solid transparent;
	border-bottom: 40px solid transparent;
	border-left: 40px solid #d4f2ff;
	position: absolute; left: 0; top: 0;
}