/*トップに戻るボタン------------------------*/

#page-top {
	position: fixed;
	bottom: 20px;
	right: 20px;
	font-size: 50%;
	clear: left;
}
#page-top a {
	text-decoration: none;
	color: #FFF;
	width: 50px;
	text-align: center;
	display: block;
	border-radius: 5px;
	background-color: #223035;
	padding-top: 10px;
	padding-bottom: 10px;
}
#page-top a:hover {
	text-decoration: none;
	background-color: #45616B;
}

#menu div {
  position: relative;
}

/* index ------------------------------- */

.bit_index_1 {
	float: left;
	background-color: #FEFBF9;
	padding: 30px;
	width: 100%;
	box-sizing: border-box;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-right-style: solid;
	border-bottom-style: solid;
	border-right-color: #BEBCBA;
	border-bottom-color: #BEBCBA;
	height: 200px;
}

.parts_head {
	clear: left;
	font-size: 14px;
	background-color: #228C00;
	color: #FFF;
	border-radius: 5px 5px 0px 0px;
	-moz-border-radius: 5px 5px 0px 0px;
	-webkit-border-radius: 5px 5px 0px 0px;
	padding-top: 15px;
	padding-right: 15px;
	padding-bottom: 10px;
	padding-left: 15px;
}

.parts_main {
	clear: left;
	font-size: 13px;
	background-color: #FFFFFF;
	padding-top: 15px;
	padding-right: 15px;
	padding-bottom: 25px;
	padding-left: 15px;
	border-radius: 0px 0px 5px 5px;
	-moz-border-radius: 0px 0px 5px 5px;
	-webkit-border-radius: 0px 0px 5px 5px;
}

.column_bit_space_1 {
	padding: 3%;
	box-sizing: border-box;
}

.parts_photo {
	background-image: url(../images/img_01c.jpg);
	background-size: cover;
	xoverflow: hidden;
	position: relative;
	height: 750px;
}

.back_blue2 {
	box-sizing: border-box;
	background-image: url(../images/img_institution_back.jpg);
	background-size: cover; 
	xoverflow: hidden;
	position: relative;
}

.parts_line {
	background-image: url(../images/img_foot_04line.png);
	background-repeat: repeat-x;
}


@media only screen and (min-width: 1921px) {
	
.parts_photo {
	height: 950px;
}

}

@media only screen and (max-width: 1200px) {
	
.column_bit_space_1 {
	padding: 10%;
}

}


@media only screen and (max-width: 500px) {

.parts_photo {
	height: 350px;
}

.bit_index_1 {
	height: 250px;
}

}