/* 新着マーク */
.notice-mark::before {
	content: "";
	right: 0;
	border-bottom: 3em solid transparent;
	border-right: 3em solid red; 
	position: absolute;
	z-index: 10;
}

.notice-mark::after {
	content: "新着";
	top: 32px;
	right: 0;
	transform: rotate(45deg);
	color: #fff;
	position: absolute;
	z-index: 10;
	font-size: 1em;
	font-weight: bold;
}