<h1 class="cp_headline01">見出しテキスト</h1>

.cp_headline01 {
	position: relative;
	padding: 0.3em 0.3em 0.3em 0.8em;
	background: #fffff2;
	-webkit-box-shadow: 0 1px 1px 0 rgba(0, 0, 0, 0.2);
	        box-shadow: 0 1px 1px 0 rgba(0, 0, 0, 0.2);
}
.cp_headline01::before,
.cp_headline01::after {
	position: absolute;
	width: 0;
	height: 51.95px;
	content: '';
	-webkit-transform: rotate(-45deg);
	        transform: rotate(-45deg);
	border-width: 0 0 0 1px;
	border-style: solid;
	border-color: #e60012;
}
.cp_headline01::before {
	top: -15px;
	right: 10px;
}
.cp_headline01::after {
	bottom: -15px;
	left: 10px;
}