*{
	margin: 0;
	padding: 0;
	list-style: none;
}
body{
	background-color: #f3f5f6;
}
.js_nav{
	width: 1200px;
	height: 470px;
	margin: 0 auto;
}
.ding{
	float: left;
	margin-right: 13px;
	margin-bottom: 20px;
}
.js_nav li:nth-child(4){
	margin-right: 0px;
}
.js_nav li img{
	width: 100%;
}
.tou{
	width: 1200px;
	margin: 0 auto;
	padding: 30px 0;
	display: flex;
	justify-content: space-between;
}
.tou a{
	display: block;
	color: #333;
	padding: 7px 35px;
	background-color: #fff;
	border-radius: 50px;
}
.tou a:hover{
	background-color: #f8760c; 
	color: #fff;
	box-shadow: 0 0px 15px rgb(0 0 0 / 30%);
}
.ding{
	width: 290px;
	position: relative;
}
.ding img{
	display: block;
}
.btn{
	background-color: #fff;
	width: 230px;
	padding: 30px;
	position: absolute;
	bottom: 0;
}
.btn h2{
	text-align: center;
}
.btn h2 i{
	line-height: 31px;
	float: right;
}
.anniu{
	display: block;
    width: 200px;
    height: 40px;
    line-height: 40px;
    border: 1px solid #ccc;
    text-align: center;
    color: #333;
    border-radius: 6px;
    font-size: 20px;
    margin: 20px auto 0;
}
.anniu:hover{
	background-color: #ff8e1f;
	border: 1px solid #ff8e1f;
	color: #fff;
}