@charset "utf-8";

/*　　ここから　　*/
* {
	margin:0;
	padding:0;
}

.main {
	background: #ffffff;
	min-height:100vh;
	position:relative;
	padding-bottom:50px;
	box-sizing:border-box;
}

.top-img{
	width:100%;
	text-align:center;
}

.box-img img{
	width:100%;
	min-width:900px;
	height:auto;
	margin:0 auto;
}

html,body {
	font-size:15px;
	font-family:'Lato', 'Hiragino Kaku Gothic Pro', 'ヒラギノ角ゴ Pro W3', Meiryo, メイリオ, Osaka, 'MS PGothic', arial, helvetica, sans-serif;
	height:100%;
	overflow-x: hidden;
}

body {
	background:#ffffff;
	-webkit-text-size-adjust:100%;
	overflow:hidden;
	overflow-y:scroll;
}

.div-box {
	background-color:#faeded;
	margin: 0 auto;
	margin-bottom:30px;
	padding:10px;
	width: 900px;
	border-radius: 15px 15px 15px 15px;
	box-shadow: 3px 3px 6px -2px #555,3px 3px 8px rgba(255,255,255,0.8) inset;
}

h2 {
	color: #005726;
	font-family: Hiragino Kaku Gothic ProN;
}

h3 {
	color: #707070;
	font-family: Hiragino Kaku Gothic ProN;
    text-align: center;
	font-size:20px;
	margin: 15px 0 15px 0;
}

.title {
	text-align: center;
	font-size:20px;
	margin: 15px 0 15px 0;
}

.salutation {
	width: 80%;
	max-width: 850px;
	margin:0 auto;
}

.sign {
	text-align: center;
	font-size:15px;
	margin: 15px 0 15px 0;
}

.organization {
	text-align: center;
	width: 80%;
	max-width: 900px;
	margin:0 auto;
}

.cooperation {
	text-align: center;
	display: flex;
	justify-content: space-around;
    margin: 15px 0 15px 0;
}

footer {
	width:100%;
	background-color:transparent;
	color: #b0b0b0;
	text-align:center;
	position:absolute;
	bottom:10px;
	font-size:15px;
	-webkit-transform:scale(0.5);
	-moz-transform:scale(0.7);
	-ms-transform:scale(0.7);
	-o-transform:scale(0.7);
	transform:scale(0.7);
	z-index:90;
}

.two-tcolumn {
	list-style: none;
    column-count: 2;
    column-gap: 10px;
    text-align:center;
}

.two-tcolumn li {
	width: 100%;
	margin: 5px;
	box-sizing: border-box;
	display: inline-block;
 }

.pile-box {
    position: relative;
    width: 640px;
    height:480px;
    margin:0 auto;
}

.pile-box:hover {
	opacity: 0.5;
	cursor:pointer;
}

.icon-youtube {
	position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@media(min-width: 851px) {
	.mobile {
		display: none;
	}
}

@media screen and (max-width: 850px) {

	.top-img img {
	    width: 100%;
	    height: auto;
	}

	.div-box {
	    width: auto;
	    padding: 5px;
	}

	.two-tcolumn {
		column-count: 1;
	}

}