.head {
	position: fixed;
	width: 100%;
	z-index: 888;
	align-items: center;
	border-bottom: 0.5rpx solid #eee
}
.title {
	position: fixed;
	width: 100%;
	text-align: center;
	line-height: 32px;
	height: 32px;
	margin-top: 5rpx;
}
.back {
	position: fixed;
	width: 81rpx;
	text-align: center;
	line-height: 32px;
	height: 32px;
	font-size: 32rpx;
	font-weight: 900;
	z-index: 9;
	align-items: center;
}