<div class="cp_card">
コンテンツ
	<div class="cp_ribbon09">
		<span>Ribbon</span>
	</div>
</div>

.cp_card {
	width: 320px;
	height: 340px;
	position: relative;
	background: #ffffff;
	overflow: visible;
	margin: 2em auto;
	padding: 0.5em;
	box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
}
.cp_ribbon09 {
	line-height: 3em;
	position: absolute;
	top: 15px;
	right: -10px;
	width: 150px;
	height: 50px;
	padding-left: 0.5em;
	color: #ffffff;
	background: #21759a;
}
.cp_ribbon09:before {
	position: absolute;
	top: -10px;
	right: 0;
	content: '';
	border-top: 5px solid transparent;
	border-right: 5px solid transparent;
	border-bottom: 5px solid #14455b;
	border-left: 5px solid #14455b;
}
.cp_ribbon09:after {
	position: absolute;
	top: 0;
	left: -25px;
	content: '';
	border-top: 25px solid #21759a;
	border-right: 0 solid #21759a;
	border-bottom: 25px solid #21759a;
	border-left: 25px solid transparent;
}