body,div,h1,h2,h3,h4,h5,p,ul,li {
	margin: 0;
	padding: 0;
	font: 16px Microsoft Yahei,PingFangSC-Regular,Arial,Helvetica,sans-serif;
}
body {
    font: 16px Microsoft Yahei,PingFangSC-Regular,Arial,Helvetica,sans-serif;
}
.main {
	width: 1200px;
	margin: auto;
	font-size: 16px;
}
a {
	text-decoration: none;
	color: #333;
}
.flex {
	display: flex;
}
.left {
	float: left;
}
.right {
	float: right;
}
li {
	list-style: none;
}