/*===== 头部 =====*/
header {
	padding: 0 15px;
	border-bottom: 1px solid #f3f3f3;
	box-shadow: 0 0 6px rgba(0, 0, 0, 0.3);
	margin-bottom: 6px;
}

.headerBox {
	text-align: center;
	padding: 15px;
	margin: 0 auto;
}

.headerBox a {
	color: #000;
}

.headerBox a:hover {
	color: #5a73a4;
}

.back_arrow {
	float: left;
}

.add_arrow {
	float: right;
}

.back_arrow span {
	font-weight: 600;
}

.add_arrow span {
	font-weight: 600;
}

.headerBox h4 {
	font-weight: 600;
	display: inline-block;
}

/* 媒体查询 */
@media (min-width: 768px) {
	.headerBox {
		width: 750px
	}
}

@media (min-width: 992px) {
	.headerBox {
		width: 970px
	}
}

@media (min-width: 1200px) {
	.headerBox {
		width: 1170px
	}
}