body {
	font-size: 120%;
	font-family: "メイリオ", sans-serif; /*メイリオ*/
}
h3 {
	position: relative;
	padding: .25em 0 .5em .75em;
	border-left: 6px solid #3498db;
}
h3::after {
	position: absolute;
	left: 0;
	bottom: 0;
	content: '';
	width: 30%;
	height: 0;
	/*border-bottom: 1px solid #ccc;*/
}
HR {
	width: 34%;
	height: 5; 
	text-align:left;
	margin-left:0px
}
video {
	position: fixed;
	width: 100%;
	left: 0;
	top: 0;
	z-index: -2; 
}
A {
	text-decoration: none;
	display: inline-block;
	padding: 0.1em 0.3em;
	transition: all .3s;
}
A:hover {
	color: #fff;
	background-color: #00BCD4;
}

ol {
  counter-reset:number; /*数字をリセット*/
  list-style-type: none!important; /*数字を一旦消す*/
  padding:0.5em;
  border: dashed 1px gray;
}

ol li {
  position: relative;
  line-height: 1.5em;
  padding: 0.5em 0.5em 0.5em 30px;
}

ol li:before{
  /* 以下数字をつける */
  position: absolute;
  counter-increment: number;
  content: counter(number);
  /*数字のデザイン変える*/
  display:inline-block;
  background: #74c2f8;
  color: white;
  font-family: 'Avenir','Arial Black','Arial',sans-serif;
  font-weight:bold;
  font-size: 15px;
  left: 0;
  width: 25px;
  height: 25px;
  line-height: 25px;
  text-align: center;
  /*以下上下中央寄せのため*/
  top: 50%;
  -webkit-transform: translateY(-50%);
  transform: translateY(-50%);
}


/*TOPボタン*/
#pagetop {
  position: fixed;
  left: 0;
  bottom: 0;
  text-indent: -9999px;
  margin: 0;
}
#pagetop a {
  position: relative;
  display: block;
  width: 65px;
  height: 65px;
  background: rgba(0,0,0,1);
  transition: opacity .6s ease;
}
#pagetop a:hover {
  opacity: .3;
}
#pagetop a::before {
  position: absolute;
  top: 7px;
  right: 0;
  bottom: 0;
  left: 0;
  display: block;
  width: 14px;
  height: 14px;
  margin: auto;
  content: '';
  transform: rotate(-45deg);
  border-top: 1px solid #FFF;
  border-right: 1px solid #FFF;
}
@media screen and (max-width:767px) {
#pagetop a {
  width: 45px;
  height: 45px;
}
#pagetop a::before {
  top: 5px;
  width: 10px;
  height: 10px;
}
}

model-viewer {
  width: 100%;
  height: 640px;
  background-color: white;
}