.box {
	padding: 20px 24px 0;
	min-height: 100vh;
	font-size: 12px;
	color: #333;
	box-sizing: border-box;
	padding-bottom: 330px;
}
#tutorialTitle {
	text-align: center;
	margin: 0 0 25px;
}
.usbTitle {
	font-size: 16px;
	flex-wrap: wrap;
	margin-bottom: 15px;
}
.line {
	border-top: 1px solid #eee;
	margin: 10px 0;
}
.forEach {
	display: flex;
	align-items: center;
	justify-content: space-around;
	flex-wrap: wrap;
}
.add_line {
	padding-bottom: 20px;
	border-bottom: 1px solid #eee;
}
.item {
	box-sizing: border-box;
	width: 48%;
	/* padding: 0px 10px 0 30px; */
	margin: 5px 0;
	height: 50px;
	display: flex;
	align-items: center;
	justify-content: center;
	background-color: #F5F5F5;
	border-radius: 10px;
}
.img {
	width: 45px;
	height: 45px;
}
.center {
	flex: 1;
	text-align: center;
}
.img_index_box {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	/* border-top: 1px solid #eee; */
	/* border-bottom: 1px solid #eee; */
}
.img_index {
	margin: 10px auto;
}
.noBg {
	background-color: transparent;
	padding: 0;
}
.ads_rel {
	width: 100%;
	position: relative;
	left: 0;
	right: 0;
	margin: 20px 0;
	padding: 20px 0;
	/* height: 220px; */
	/* background-color: #333; */
	border-top: 1px solid #eee;
	border-bottom: 1px solid #eee;
}
.ads {
	width: 100%;
	/* height: 300px;
	background: #000; */
	position: fixed;
	left: 0;
	right: 0;
	bottom: 0;
}