@charset "utf-8";

/* ========================================================== */
/* 全体の構造 */	
body {
	margin: 0px;
	color: #151515;
	font-family: "Gill Sans", "Gill Sans MT", "Myriad Pro", "DejaVu Sans Condensed", Helvetica, Arial, sans-serif;
	background-color: #EFF5F8;
}
#wrapper {
	width: 100%;
	min-width: 740px;
	max-width: 800px;
	margin-left: 5px;
	margin-right: 5px;
	background-color: #FFFFFF;
	margin-top: 5px;
	margin-bottom: 5px;
}
#top {
    overflow: hidden;
}
#hero img {
	max-width: 100%;
	float: left;
	margin-top: 10px;
	margin-right: 10px;
	margin-bottom: 10px;
	margin-left: 10px;
	width: 45%;
	height: 60%;
}

#textbook {
	/* font-size: small; */
	margin-top: 10px;
	margin-right: 10px;
	margin-bottom: 10px;
	margin-left: 10px;
	padding-top: 5px;
	width: 45%;
	float: left;
	border: medium ridge rgba(13,240,239,1.00);
	padding-right: 5px;
	padding-bottom: 5px;
	padding-left: 5px;
	border-collapse: separate;
}

#amazonMaeda {
        margin-top: 6px;
	margin-right: 10px;
	margin-bottom: 10px;
	margin-left: 10px;
	padding-top: 5px;
	padding-right: 5px;
	padding-bottom: 5px;
	padding-left: 5px;
	border-collapse: separate;
}

#intro {
	border-style: solid;
	width: 45%;
	float: left;
	margin-top: 20px;
	margin-right: 10px;
	margin-bottom: 20px;
	margin-left: 10px;
	padding-top: 3px;
	padding-right: 3px;
	padding-bottom: 3px;
	padding-left: 3px;
}

footer {
	padding-top: 2px;
	padding-bottom: 2px;
	padding-left: 2%;
	background-color: #43a6cb;
	color: #FFFFFF;
	clear: left;
}


/* ========================================================== */
/* ナビゲーション */	
#mainnav ul {
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px;
	margin-left: 0px;
	padding-top: 0px;
	padding-right: 0px;
	padding-bottom: 0px;
	padding-left: 0px;
	list-style-type: none;
}
#mainnav a {
	width: 20%;
	display: block;
	float: left;
	text-align: center;
	background-color: #4D4D4D;
	color: #FFFFFF;
	padding-top: 6px;
	padding-bottom: 6px;
}
#mainnav a:hover, #mainnav a:active, #mainnav a:focus {
	background-color: #43A6CB;
}

a {
	font-weight: bold;
	text-decoration: none;
}
a:link {
	color: #FF6600;
}
a:visited {
	color: #FF944C;

}
a:hover, a:active, a:focus {
	color: #7F3300;
	text-decoration: underline;
}


/* ========================================================== */

/* ========================================================== */
/* タイトル */
h1, h2, h3, h4, h5 {
	color: #3399CC;
	font-family: source-sans-pro;
	font-style: normal;
	font-weight: 600;
}

h1 {
	font-size: 72px;
	margin-top: 0px;
	margin-bottom: 0px;
	text-align: center;
	text-transform: uppercase;
}
h2 {
	margin-top: 0.5em;
	background-color:#FAEBD7;
}

h3 {background-color:#F0F8FF;}

h4:before {content:"★"; margin-left: 1em;}

h5:before {content:"■"; margin-left: 1em;}

/* ========================================================== */
/* 図 */

figure {
	display: block;
	width: 420px;
}
figure img {
	padding: 10px;
	-webkit-box-shadow: 1px 1px 15px #999999;
	box-shadow: 1px 1px 15px #999999;
	max-width: 300px;
   	height: auto;
}

figcaption {
	font-size: 0.875em;
	font-weight: bold;
	text-align: center;
	display: block;
	margin-top: 0.5em;
}

.picSizeLarge {max-width: 500px;}


/* ========================================================== */
/* 文章 */

article {
　　　　　width: 100%;
	margin-top: 0px;
	margin-right: 20px;
	margin-bottom: 0px;
	margin-left: 20px;
}

.explanation {
    margin-top: 20px;
	margin-right: 40px;
	margin-bottom: 20px;
	margin-left: 40px;
	padding-top: 5px;
	border: medium ridge rgba(13,240,239,1.00);
	padding-right: 5px;
	padding-bottom: 5px;
	padding-left: 5px;
	border-collapse: separate;
}

.f-big:first-letter {
font-size:2.5em;
color:blue;
text-shadow: 2px 2px orange;
margin:0px 3px 3px 3px;
float:left;
}

.narrowSection {
width: 90%;
margin-left: 20px;}

/* ========================================================== */
/* 汎用クラス */

.centered {
	margin-left: auto;
	margin-right: auto;
}

.narrow {width: 80%;}


.myClear {
	clear: both;}
	

.text-centered {text-align: center;}