.content-introduction h3 {
	margin-top: 20px;
	margin-bottom: 20px;
	padding-left: 10px;
	font-size: 2.25em;
	font-weight: bold;
	border-left: 10px solid #ccc;
}
.content-introduction h4 {
	margin-top: 20px;
	background: #eee;
	padding: 0.5em;
	font-weight: bold;
	border-radius: 10px;
}
.content-introduction h4 > span {
	margin-right: 0.5em;
	padding: 0.25em 0.5em;
	color: #fff;
	background-color: #444;
	border-radius: 10px;
}

.content-introduction .section {
	margin-bottom: 40px;
}
.content-introduction .section-sub {
	padding: 20px;
	border: 1px solid #faebcc;
	border-radius: 10px;
	background-color: #fcf8e3;
}
.content-introduction .section-sub > div {
	margin-bottom: 20px;
}
.content-introduction .section-sub > div:last-child {
	margin-bottom: 0;
}
.content-introduction .section-sub .emphasis {
	padding: 10px;
	border: 1px solid #fadda2;
	border-radius: 10px;
	background-color: #fff3b5;
}

.content-introduction .balloon {
	margin-top: 10px;
	position: relative;
	padding: 10px;
	background-color: #fff;
	border: 2px solid #999;
	border-radius: 10px;
	display: inline-block;
}

/* beforeで枠線の三角を表現 */
.content-introduction .balloon::before {
	content: '';
	position: absolute;
	display: block;
	width: 0;
	height: 0;
	left: 10px;
	top: -15px;
	border-right: 15px solid transparent;
	border-bottom: 15px solid #999;
	border-left: 15px solid transparent;
}

/* beforeで本体の三角を表現 */
.content-introduction .balloon::after {
	content: '';
	position: absolute;
	display: block;
	width: 0;
	height: 0;
	left: 10px;
	top: -12px;
	border-right: 15px solid transparent;
	border-bottom: 15px solid #fff;
	border-left: 15px solid transparent;
}

/* 画像の枠 */
.media-object {
	border: 1px #ccc solid;
}