}* カスタム CSS をここに入力してください */
/h1 {
	position: relative;
	height: 50px;
	line-height: 50px;
	padding: 0 1em;
	background-color: #f0f0f0;
}
h1::before,
h1::after {
	content: '';
	position: absolute;
}
h1::before {
	top: 100%;
	left: 0;
	border-width: 0 15px 15px 0;
	border-style: solid;
	border-color: transparent;
	border-right-color: #ccc;
}
h1::after {
	top: 0;
	right: 0;
	z-index: 2;
	border-width: 25px 20px;
	border-style: solid;
	border-color: transparent;
	border-right-color: #fff;