body {
	text-align: center;
}

.container, .container-fluid {
	text-align: center;
	width: 370px;
	display: inline-block;
}

.header, .mainbar, .footer {
	text-align: center;
	margin-top: 15px;
}

.center-pills {
	display: inline-block;
}

#result, #format {
	width: 366px;
	text-align: left;
	margin: auto;
}

#range, #duoshuo {
	width: 366px;
	text-align: center;
	margin: auto;
}