.sentaku {
	height: auto;
	width: 500px;
	margin-top: 60px;
	margin-left: 40px;
	border: 1px dotted #666;
	text-align: center;
	margin-bottom: 40px;
}
.container .content hr {
	width: 90%;
	margin-top: 50px;
	border-top-width: 1px;
	border-top-style: dashed;
	border-top-color: #666;
}