/* 下向き矢印部分 */

.difficulty_arrow::after {
	content:"";
	display:block;
	width:25px;
	height:25px;
	margin:auto;
	border-right:5px solid #5584ed;
	border-bottom:5px solid #5584ed;
	transform:rotate(45deg);
	border-radius:3px;
}