.Article01{width:100%; height:5px; background:#0b0;}
.article02 {
	
	margin-top: 10px;
	border: 6px solid #0b0;
}

.exam1 {
	background: #efe;
	padding: 10px  1%;
	display: inline-block;
	margin: 10px 1%;
	max-width: 100%;
	border: 1px solid #0c0;
	border-radius: 10px;
}
.exam2 {
	padding: 10px;
	margin: 10px 10px;
	max-width: 100%;
}
.exam3 {
	background: #eff;
	padding: 10px 1%;
	display: inline-block;
	margin: 10px 1%;
	max-width: 100%;
	border: 1px solid #8cc;
	border-radius: 10px;
}
.content01 {
	padding: 10px  1%;
	border-radius: 20px;
}

.breadcrumb {
	padding: 0 .5rem;
}

.breadcrumb ul {
	display: flex;
	flex-wrap: wrap;
	list-style: none;
	margin: 0;
	padding: 0;
}

.breadcrumb li:not(:last-child)::after {
	display: inline-block;
	margin: 0 .25rem;
	content: "←";
}

.NavClass2 {
	bottom: 0px;
	position: fixed;
	z-index: 1;
	background-color: #a4c0fb;
}
.NavClass3{
	bottom: 0px;
	position: fixed;
	z-index: 0.8;
	background-color: #a4c0fb ;
	font-size:16px;
	padding:0px 5px;
	
}
.link01{
	text-decoration: none; 
	margin-left: 2px;
	padding: 0 3px;
	
border-radius: 15px;}
.link02:hover{ background: #f91;}
.link02{ 
	background-color: #fee;
	height:23px;
	border: 3px solid #f77;
}
.link03{
	background-color: #afa;
	border: 3px solid #0a4;
}
body {
	overflow-x: hidden; 
	color: #000; 
	background: #adf; 
	text-decoration: none; 
	font-family: Arial,Sans-serif,Tahoma; 
	font-size: 18px; 
	line-height: 30px;
}
.textarea01 {
	padding-right: 5px;
	width: 90%;
	height:40px;
	
	background: #fff;
	
	font-weight: bold;
	font-size: 15px;
}
.rectangle{width: 75px; height:50px;float:left;	}
.sphere{width: 75px; height:50px;float:left;	overflow: auto;}
.shape{background:#bfb;  padding:5px; display:inline-block; margin:10px; border: 5px solid #5bf;
border-radius: 15px;}

/*--------------*/

.frac {
    display: inline-block;
    position: relative;
    vertical-align: middle;
    letter-spacing: 0.001em;
    text-align: left;
	
}
.frac > span {
    display: block;
    padding: 0.1em;
}
.frac span.bottom {
    border-top: thin solid black;
}
.d031{
	margin:4%;
	background:#fff;
	text-align:center;
	display: inline-block;
	width:170px;
	height:60px;
	
}

.visited{
	background-color:#f00;
	color:#fff;
	font-size:20px;
	padding:5px;
	margin:5px;
}
.visited:hover{
	background-color:#00b185;
	color:#fff;
	border-radius:30px;
}
.visited2{
	background-color:#efe;
	padding:10px;
	text-align:center;
	font-size:18px;
	display:inline-block;
		color:#000;
}
.visited3{
	font-size:18px;
	background-color:#ffd;
	display:block;
	padding:5px;
	margin:5px;

}
.btn1b{
	text-align:center;
	background-color:#fff;
	font-size:18px;
	display:inline-block;
	width:100px;
	line-height:40px;
	color:#000;
}
.div01b{
	background-color:#ddf;
	
}

.articleb {
	background: #ffa;
	
	border: 2px solid #bbf!important;
}

.c02c{background:#bfb;  padding:5px;color:#000;}


.c05{background:#fff;display: inline-block;padding:5px;}