* {
	margin: 0;
	padding: 0;
	}
			
	p{
	width: 200px;
	height: 100px;
	background: #FFFFFF;
	border: 1px solid #ddd;
	margin: 50px auto;
	position: relative;
	padding: 10px;
	}
			
	p:after{
	content: '';
	position: absolute;
	width: 10px;
	height: 10px;
	border: solid #ddd;
	border-width: 1px 1px 0 0;
	background: #fff;
	top: -7px;
	right: 17px;
	transform: rotate(-45deg);
	}
			
	p:before {
	content: '';
	position: absolute;
	width: 10px;
	height: 10px;
	border: solid #ddd;
	border-width: 1px 1px 0 0;
	background: #fff;
	top: 23px;
	left: -6px;
	transform: rotate(-135deg);
	}
			
	div{
	width: 100px;
	height: 50px;
	background: #ddd;
	margin: 50px auto;
	position: relative;
	padding: 10px;
	}
			
	div:after{
	content: '';
	position: absolute;
	width: 0;
	height: 0;
	border-right: 10px solid transparent;
	border-bottom: 10px solid #DDDDDD;
	border-left: 10px solid transparent;
	top: -10px;
	}
			
	div:before{
	content: '';
	position: absolute;
	width: 0;
	height: 0;
	border-top: 10px solid transparent;
	border-bottom: 10px solid transparent;
	border-right: 10px solid #ddd;
	top: 11px;
	left: -10px;
	}