body_E{
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.topNavigation_E{
    height: 70px;
    text-align: center;
    background-color: #888;
    color: #fff;
}
.content_E{
    flex: 1;
    background-color: #eee;
    text-align: center;
    margin-top: 10px;
}



/*
ベース
-------------------------------------------------------------------*/
#base {
	width:750px;
	margin-right: auto;
	margin-left: auto;
	background-image: url(img/base_bg.jpg);
	background-color: #FFFFFF;
	margin-top: 0px;
/*
	border: 1px solid #000000;
*/
}

#wrap {
	float: left;
	padding: 5px;
	margin-top: 5px;
	width: 790px;
}


/*

/*ナビゲーション
----------------------------------------------- */
#nav {
	padding: 2px;
	background-color: #393939;
	border-top-width: 2px;
	border-bottom-width: 2px;
	border-top-style: solid;
	border-bottom-style: solid;
	border-top-color: #000000;
	border-bottom-color: #000000;
}

#nav ul {
	list-style-type:none;
	display: block;
	margin-left: 10px;
  }
  

#nav li {
	display: inline;
	padding-left: 22px;
	padding-right: 20px;
	background-image: url(img/c_li.gif);
	background-repeat: no-repeat;
	background-position: 10px center;
	border-right-width: 1px;
	border-right-style: solid;
	border-right-color: #FFFFFF;
  }
  
#nav li_act {
	display: inline;
	padding-left: 22px;
	padding-right: 20px;
	background-image: url(img/c_li.gif);
	background-repeat: no-repeat;
	background-position: 10px center;
	border-right-width: 1px;
	border-right-style: solid;
	border-right-color: #FFFFFF;
	background-color: red;
  }
  
#nav li2 {
	display: inline;
	padding-left: 22px;
	padding-right: 20px;
	background-image: url(img/c_li.gif);
	background-repeat: no-repeat;
	background-position: 10px center;
  }
  
#nav li2_act {
	display: inline;
	padding-left: 22px;
	padding-right: 20px;
	background-image: url(img/c_li.gif);
	background-repeat: no-repeat;
	background-position: 10px center;
	background-color: red;
  }
  
#nav a {
	color: #FFFFFF;
	font-size: 14px;
	line-height: 20px;
	letter-spacing: 0.1em;
	text-decoration: none;
}

#nav a:hover {
	color: #FFFF66;
	text-decoration: underline;
}


/*
コンテンツ
-------------------------------------------------------------------*/

#contents {
	width:730px;
	float: right;
}

#contents p{
	padding-top: 3px;
	padding-bottom: 3px;
	margin-right: 30px;
	margin-left: 10px;
	line-height: 20px;
	padding-right: 10px;
	padding-left: 10px;
	margin-top: 10px;
	margin-bottom: 10px;
}


#contents h2 {
	font-size: 14px;
	padding-left: 10px;
	color: #333333;
	margin-top: 10px;
	margin-bottom: 5px;
	margin-right: 10px;
	margin-left: 5px;
	font-weight: bold;
	border-left-width: 7px;
	border-left-style: solid;
	/*border-left-color: #802C22;*/
	border-left-color: #000000;
	border-bottom-width: 1px;
	border-bottom-style: solid;
	/*border-bottom-color: #EAEAEA;*/
	border-bottom-color: #999999;
	padding-top: 2px;
	padding-bottom: 2px;
}



-------------------------------------------------------------------*/
/*クリックして表示*/
/*全体*/
.hidden_box {
    margin: 2em 0;/*前後の余白*/
    padding: 0;
}

/*ボタン装飾*/
.hidden_box label {
    padding: 1px;
    text-decoration:underline;
    cursor :pointer;
}

/*ボタンホバー時*/
.hidden_box label:hover {
    background: #efefef;
}

/*チェックは見えなくする*/
.hidden_box input {
    display: none;
}

/*中身を非表示にしておく*/
.hidden_box .hidden_show {
    height: 0;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    transition: 0.8s;
}

/*クリックで中身表示*/
.hidden_box input:checked ~ .hidden_show {
    padding: 10px 0;
    height: auto;
    opacity: 1;
}