*{
	margin:0;
	padding:0;
}
li,ul{
	list-style-type: none;
}
a{
	text-decoration: none;
	color: white;
}
#div1{
	width: 70%;
	height: 150px;
	background: wheat;
	margin: 0 auto;
	margin-top: 2px;
}
.cu1{
    width:70%;
	height: 60px;
	line-height: 60px;
    margin: 0 auto;
	position: relative;
	background-color: skyblue;
}
.cu1 > li{
    position: relative;
    width: 100px;
	list-style-type: none;
	display: block;
	float: left;
	margin: 0px;
	margin-left: 120px;
}
.cu1 li a{
    display: block;
	text-align: center;
	margin: 0 auto;
}
.cu1 > li > a:hover{
    background-color: rgba(0, 0, 0, .23);
}
.cu1 ul{
    display: none;
    position: absolute;
	background-color: skyblue;
    width: 100%;
}
.cu1 ul li a:hover{
    background-color: rgba(0, 0, 0, .23);
}
#div2{
	width: 70%;
	height: 700px;
	background: skyblue;
	margin: 0 auto;
}
#div3{
	width: 70%;
	height: 1400px;
	background: skyblue;
	margin: 0 auto;
	margin-top:0px;
}
.h1{
	color:white;
	text-align: center;
	margin-top: 2px;
}
.h2{
	color: white;
	text-align: center;
	margin-top: 2px;
}
.p1{
	width: 1000px;
	text-indent: 2em;
	font-size: 18px;
	color: aliceblue;
	margin-top:px;
	margin: 0 auto;
}
.c1{
	text-align: center;
	margin-top:10px;
}
#div4{
	width:70%;
	height:100px;
	background:wheat;
	margin: 0 auto
}
.p2{
	color: aqua;
	text-align: center;
	margin-top: 40px;
}