.main02{
 width: auto;
}
.Min{
width:100%;
margin:auto;
}
.Min_item {
 margin: 0 auto;
 width: 1280px;
 position: relative;
}

.item_div {
 float: left;
 transition: all 0.2s;
 margin: 0 40px 40px 0;
}
.item_div{
 width: 400px;
 height: 240px;
}
.item_div:nth-child(3n){
 margin-right: 0;
}
.item_div:hover {
 transform: scale(1.1);
 transition: all 0.2s;
}
.pd_60{
 padding: 60px 0;
}
.site_banner img{
  width: 100%;
}
@media only screen and (max-width:768px){
	.item_div img{width: 100%;height: auto;}
	.item_div{width: 47%;height: auto;margin-right: 40px;}
	
	.item_div:nth-child(3n) {
		margin-right: 40px;
	}
	.item_div:nth-child(2n) {
		margin-right: 0;
	}
	.Min_item{width: 100%;}
}
@media only screen and (max-width:480px){
	.item_div{width: 100%;height: auto;margin-right: 0;}

 
}