.kv{  
	background-image: url(../images/history/history_kv.jpg); 
} 

.tabs { 
	padding-top: 50px;
	margin-bottom: 32px;
} 
.tabs a{
	display: inline-block;
	width: 245px;
	line-height: 52px;
	text-align: center;text-decoration: none;
	border: 1px solid #000;
	background-color: #fff;
	color: #000;
	margin-right: 10px;
}
.tabs a.current{
	background-color: #000;
	color: #fff;
}
.tabs a:last-of-type{
	margin-right: 0;
}
.content{
	border-bottom: 1px solid #919292;
	margin-bottom:50px; 
	padding-bottom: 50px;
}
.content article.intro_container{ 
	display: inline-block;
    width: 35%;
    vertical-align: top;
    margin-right: 12%;
}
.content img{  
    width: 51%;
    display: inline-block; 
} 
.content article .year{
	font-size: 42px; font-weight: bold;
	line-height: 1;
	margin-bottom: 30px;
}
@media screen and (max-width:640px) {
	
	.kv{   
		background-image: url(../images/history/history_kv_sp.jpg); 
	} 
	.tabs{
		/* margin-top:40px;  */
	}
	.tabs a{
		width: 47.4%;
	    line-height: 2.5;
	}
	.tabs a:nth-of-type(2n){
		margin-right: 0px;    margin-bottom: 13px;
	}
	.content{
		border-bottom: 0px none;
		padding-bottom: 0;
	}
	.content article.intro_container{
		display: block;
		width: 100%;
	}
	.content article .year{
		font-weight: normal;
	}
	.content img{
		margin-top:35px; 
		width: 100%;
		display: block;
	}
}