html,body{
	margin: 0;
	padding: 0;
	font-family: SourceHanSerifCN, SourceHanSerifCN;
	font-size: 16px;
	width: 100%;
	height: 100%;
}
input{
	border: none;
}
input:focus {
	outline: none;
}
ul{
	list-style: none;
	margin: 0;
	padding: 0;
}
a{
	text-decoration: none;
}
p{
	margin: 0;
}
.clearfix{
	clear: both;
}
.main_content{
	width: 1600px;
	margin: 0 auto;
	position: relative;
	z-index: 20;
	padding-bottom:60px;
}
.flex{
	display: flex;
}
.flex_center{
	display: flex;
	align-items: center;
	justify-content: center;
}
.flex_between{
	display: flex;
	align-items: center;
	justify-content: space-between;
}
.text_center{
	text-align: center;
}
.mt32{
	margin-top: 28px;
}