#main_content{
	background-color:transparent;
	z-index: -1;
}

.about_main_vis{
	/*background: url(../images/about_bg_pc.jpg) left top no-repeat;*/
	background-color: whitesmoke;
	min-height: 100vh;
  	width: 100%;
	max-width:1280px;
	box-sizing: border-box;
	position: fixed; /* 背景を固定 */
	background-size: cover; /* 画面全体にフィット */
	background-position: center; /* 中央揃え */
	z-index: -2; /* 背景を後ろに送る */
}

.about_heading{
	padding-top: 230px;
	margin-left: -30px;
	text-align: left;
	font-family: Futura;
	font-style: normal;
	font-weight: bold;
	line-height: 50px;
	font-size: 47px;
}

.about_heading-sub{
	margin-top: 10px;
	margin-left: -30px;
	text-align: left;
	font-family: Futura;
	font-style: normal;
	font-weight: 500;
	font-size: 18px;
}

.about_item{
	padding:200px 150px;
}

.about_frame{
	position: relative;
	padding:100px;
	background-color: rgba(255, 255, 255, 0.4);
	/* border: 2px solid white; */
	border: 2px solid gray;
    border-radius: 30px;
	box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
	z-index: -1;
}

.about_item_heading{
	line-height: 47px;
	text-align: left;
	font-family: Montserrat;
	font-style: normal;
	font-weight: 500;
	font-size: 24px;
}

.about_item_overview{
	line-height: 77px;
	text-align: left;
	font-family: Montserrat;
	font-style: normal;
	font-weight: bold;
	font-size: 43px;
	letter-spacing: 0.5px;
	text-decoration:underline 7px;
	text-decoration-color: rgba(174, 255, 44, 1);
	text-underline-offset: 10px;
}

.about_item_detail{
	margin-top:80px;
	line-height: 40px;
	text-align: left;
	font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", sans-serif;
	font-style: normal;
	font-weight: bold;
	font-size: 18px;
	letter-spacing: 0.5px;
}

.about_company{
	width: 80%;
	margin:0 auto;
	text-align: left;
	font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", sans-serif;
	font-style: normal;
	font-weight: bold;
	font-size: 16px;
	color: rgba(33, 33, 33, 1);
	letter-spacing: 0.5px;
}

.about_company_heading{
	line-height: 47px;
	text-align: center;
	font-family: Montserrat;
	font-style: normal;
	font-weight: normal;
	font-size: 24px;
	color: rgba(33, 33, 33, 1);
	margin-bottom:50px;
}

.about_company_table {
	text-align: left;
	font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", sans-serif;
	font-style: normal;
	font-weight: 500;
	font-size: 16px;
	color: rgba(33, 33, 33, 1);
	letter-spacing: 0.69px;
}

.about_company_row{
	height:auto;
	padding: 25px 0;
	padding-right:50px;
	margin-bottom:20px;
	text-align: left;
	vertical-align: middle;
	border-top: 1px solid #000;
}

.about_company_left{
	width: 30%;
	float:left;
}

.about_company_right{
	width: 60%;
	float:right;
}

@media only screen and (min-width: 1024px) and (max-width: 1279px) {
	/* 1280px以下に適用されるCSS（タブレット用） */
}

@media only screen and (min-width: 768px) and (max-width: 1023px) {

	/* 1023px以下に適用されるCSS（タブレット用） */
	article {
		padding: 50px;
	}

	.about_heading {
		padding-top: 100px;
	}

	.about_item {
		padding: 200px 50px;
	}
	.about_heading {
		margin-left: 50px;
	}

	.about_heading-sub {
		margin-left: 50px;
	}

	.about_item_overview {
		line-height: 60px;
		font-size: 32px;
	}

	.about_item_detail {
		font-size: 18px;
	}

	.about_frame {
		padding: 100px 80px;
	}
}

@media only screen and (min-width: 481px) and (max-width: 767px) {

	article {
		padding: 50px;
	}

	.about_heading {
		padding-top: 100px;
	}

	.about_item {
		padding: 200px 30px;
	}

	.about_heading {
		margin-left: 50px;
	}

	.about_heading-sub {
		margin-left: 50px;
	}

	.about_item_overview {
		line-height: 60px;
		font-size: 28px;
	}

	.about_item_detail {
		font-size: 16px;
	}

	.about_frame {
		padding: 100px 50px;
	}
}
@media (max-width: 480px){

	.about_main_vis{
		/*background: url(../images/about_bg_pc.jpg) left top no-repeat;*/
		background-color: white;
		background-size: 100% auto;
		height:850px;
	}

	.about_main_vis .about_heading{
		padding-top: 250px;
		margin:0;
		line-height: 40px;
		font-size: 38px;
		text-align: center;
	}
	
	.about_main_vis .about_heading-sub{
		margin:0;
		margin-top:20px;
		font-size: 14px;
		text-align: center;
	}

	.about_heading{
		padding-top: 230px;
		margin-left: 0px;
		text-align: center;
		font-size: 38px;
	}

	.about_heading-sub{
		margin-top: 0px;
		margin-left: 0px;
		text-align: center;
		font-size: 14px;
	}

	.about_item{
		margin-bottom: 100px;
		padding:20px;
	}

	.about_item_heading{
		line-height: 50px;
		font-size: 16px;
		text-align: center;
	}

	.about_frame{
		padding:16px;
	}


	.about_item_overview{
		line-height: 42px;
		text-align: center;
		font-size: 20px;
		text-decoration:underline 5px;
		text-decoration-color: rgba(174, 255, 44, 1);
		text-underline-offset: 8px;
	}

	.about_item_detail{
		margin-top:50px;
		line-height: 38px;
		text-align: left;
		font-size: 16px;
	}

	.about_company{
		width: 100%;
		margin: 0 auto;
		padding: 70px 20px;
	}

	.about_company_heading{
		margin-bottom:30px;
	}

	.about_company_left{
		width: 100%;
		float:none;
	}

	.about_company_right{
		width: 100%;
		float:none;
	}
}