.bg_img1 {
	background: url("/images/history/history_img1.jpg")center center ;
	background-size: cover;
}
.bg_img2 {
	background: url("/images/history/history_img2.jpg")center center ;
	background-size: cover;
}
.bg_img3 {
	background: url("/images/history/history_img3.jpg")center center ;
	background-size: cover;
}
.bg_img4 {
	background: url("/images/history/history_img4.jpg")center center ;
	background-size: cover;
}
.content_l .content_lr_inner {
	float: right;
    padding: 60px;
    box-sizing: border-box;
}
.content_r .content_lr_inner {
	float: left;
    padding: 60px;
    box-sizing: border-box;
}
.content_l .content_lr_inner p,
.content_r .content_lr_inner p {
	line-height: 2.2;
}
.content_lr_inner .h2_title {
    font-size: 2.2rem;
	padding: 10px 0;
	text-align: left;
	line-height: 1.4;
}
.content_top {
	margin-top: 80px;
}
.history_table {
	width: 90%;
	margin: 0 auto;
}




@media screen and (max-width: 768px) {
	.content_top {
		margin-top: 10px;
	}
	.content_l .content_lr_inner,
	.content_r .content_lr_inner {
		float: none;
		padding: 20px 5%;
	}
	.history_table {
		width: 100%;
	}
	.history_table th {
		display: none;
	}
	.history_table td {
		display: block;
		width: 100%;
		box-sizing: border-box;
		font-size: 1.4rem;
		border:none;
	}
	.history_table td:first-child {
		text-align: center;
		background: #efefef;
		padding: 7px;
		
	}
}