@charset "UTF-8";
.page_header{background-color:#0081cc;color: #ffffff;background-image:url("../img/page_header_pc.webp");background-repeat: no-repeat;background-size: cover;position: relative;}

/* about_usのCSS */
.about_back{
width: 100vw;
   margin: 0 calc(50% - 50vw) 5em;
  height: auto;
	background-image:url("../img/about_back_pc.png");background-repeat: no-repeat;background-size: cover;background-position: center;
  
}

dl.about{
  display: flex;
  flex-wrap: wrap;
	width: 50%;
	margin: 0;
	padding: 0 0 5em;
}
dl.about dt {
  width: 18%;
	height: 30px;
padding: 3px 3%;
 margin: 2% 0;
  display: flex;
  align-items: center;
  justify-content: center;
	font-size: 1em;
	font-weight: bold;
	background-color: #DCECFF;
}
dl.about dd {
  width: 70%;
  padding: 3px 3%;
  margin:2% 0;
	font-size: 1em;
	text-align: left;
	line-height: 1.8em;
	color: #ffffff;
}
/* 年表のCSS */
.timeline > li {
    overflow: hidden;
    margin: 0em 0 0em;
    position: relative;
	
  }
.timeline-date {
    width: 150px;
    float: left;
    margin-top: 20px;
	color: #3aa0da;
  }
.timeline-content {
    width: 75%;
    float: left;
    border-left: 2px #3aa0da solid;
    padding-left: 30px;
	padding-bottom: 1em;
	padding-top: 1em;
  }
.timeline-content h3{font-weight: normal;}
.timeline-content:before {
    content: '';
    width: 12px;
    height: 12px;
    background: #3aa0da;
    position: absolute;
    left: 145px;
    top: 24px;
    border-radius: 100%;
  }
/*
===================================================
 tb タブレット解像度
===================================================
*/
@media screen and (max-width:1000px) {

	}
/*
===================================================
 sp スマホ解像度
===================================================
*/
@media screen and (max-width:640px) {
.page_header{background-color:#0081cc;color: #ffffff;background-image:url("../img/page_header_sp.webp");background-repeat: no-repeat;background-size: cover;margin-top: 50px;position: relative;}

/* about_usのCSS */
.about_back{
width: 100vw;
   margin: 2% calc(50% - 50vw) 5em;
  height: auto;
	background-image:url("../img/about_back_sp.png");background-repeat: no-repeat;background-size: cover;background-position: center;
  
}

dl.about{
  display: flex;
  flex-wrap: wrap;
	width: 100%;
	margin: 0;
	padding: 0 0 18em;
}
dl.about dt {
  width: 15%;
	height: 24px;
padding: 3px 3%;
 margin: 1.4% 0;
  display: flex;
  align-items: center;
  justify-content: center;
	font-size: 1em;
	font-weight: bold;
	background-color: #DCECFF;
}
dl.about dd {
  width: 73%;
  padding: 3px 3%;
  margin:1.4% 0;
	font-size: 1em;
	text-align: left;
	line-height: 1.8em;
	color: #ffffff;
}
/* 年表のCSS */
.timeline {
  list-style: none;
}
.timeline > li {
  margin-bottom: 0px;
	border-bottom: solid 1px #3aa0da;
}
.movie iframe{width: 100%;height: 200px;}
.timeline-date {
    width: 150px;
    float: none;
    margin-top: 10px;
	padding-left: 20px;
  }
.timeline-content {
    width: 95%;
    float: none;
    border-left:none;
    padding-left: 20px;
	padding-bottom: 1em;
	padding-top: 0em;
  }
.timeline-content:before {
    content: '';
    width: 12px;
    height: 12px;
    background: #3aa0da;
    position: absolute;
    left: 0px;
    top: 14px;
    border-radius: 100%;
  }
}