*{
	margin: 0;
	padding: 0;
	list-style: none;
	font-family: "微软雅黑";
}
html,body{
	height: 100%;
	width: 100%;
	font-size: 0;
}
input textarea{
	appearance: none;
	-webkit-appearance: none;
	-o-appearance: none;
	-moz-appearance: none;
}
.nav{
	background-color: #ffd200;
	height: 120px;
	width: 100%;
}
nav{
	display: table;
	max-width: 1200px;
	width: 90%;
	margin: 0 auto;
	height: 40px;
	padding-top: 40px;;
}
nav a{
	display: table-cell;
	text-align: center;
	line-height: 40px;
	color: black;
	width: 100px;
	font-size: 14px;
}
.navi span{
	display: inline-block;
	border-radius: 40px;
	width: 100px;
}
.navi .active{
	background-color: black;
	color: white;
}
.navi:hover span{
	background-color: black;
	color: white;
	cursor: pointer;
}
.clearFix:after {
	clear: both;
	display: block;
	visibility: hidden;
	height: 0;
	line-height: 0;
	content: "";
}
.logo{
	margin: 0 auto;
	width: 180px;
	height: 180px;
	text-align: center;
	background-color: #FFD200;
	margin-top: -160px;
	border-radius: 300px;
	overflow: hidden;
}
.logo img{
	margin-top: 60px;
	width: 75%;
}
.menu{
	display: none;
}
@media only screen and (max-width:880px ) {
	.nav{
		position: fixed;
		top: 0;
		z-index: 100;
		height: 50px;

	}
	.logo{
		position: fixed;
		z-index: 100;
		width: 80px;
		height: 80px;
		margin-top: 0px;
		left: 40%;
		top: 0;
		overflow: hidden;
		box-shadow: 0 -1px 1px gray;
	}
	.logo img{
		margin-top: 10px;
		width: 100%;
	}
	.menu{
		display: block;
		position: fixed;
		z-index: 100;
		top: 5px;
		right: 20px;
		width: 40px;
		height: 40px;
		text-align: center;
	}
	.menu img{
		margin-top: 15%;
		width: 70%;
	}
	nav{
		display: block;
		position: absolute;
		height: auto;
		z-index: 20;
		right: 10px;
		top: 20px;
		background-color: #FFD200;
		width: 110px;
		margin-left: 5px;
		padding-left: 10px;
		border-radius: 15px;
	}
	nav a{
		display: none;
	}
	.navi{
		margin-top: 15px;
		height: auto;
	}
	.banner{
		margin-top: 60px;
	}
	}