@media (min-width: 768px){
	.part4 .row{
		flex-wrap:nowrap;
	}
	.part4 .column{
		flex-direction:column;
	}
	.part4 .flex-box{
		display: -ms-flexbox;
		display:flex;
	}
	.part4 .d-none{
		display: flex !important;
	}
	.footer .ewm{
		justify-content:flex-end;
	}
	.footer .ewm-item{
		margin-left: 40px; 
		margin-right: 0;
	}
}
@media (min-width: 992px){
	.navbar .header{
		padding-top: 25px; 
		padding-bottom: 25px;
	}
	/* µ¼º½ */	
	.navbar-expand-lg{
		flex-direction:column;
		align-items:flex-start;
	}
	.navbar-expand-lg .navbar-nav{
		flex:1;
	}
	.navbar-expand-lg .navbar-nav .nav-link{
		padding-top: 14px; 
		padding-bottom: 14px;
		
	}
	.navbar-brand img{
		height:57px;
	}
	.header-right{
		display:flex;
		align-items:center;
	}
	.headline .item{
		margin-bottom: 60px;
	}
	.part2{
		padding-bottom: 30px;
	}
	.part3{
		padding-bottom: 80px;
	}
	.part2 .hd,
	.part3 .hd{
		font-size: 30px;
	}
	.part2 .hd .t span, .part3 .hd .t span{
		font-size: 38px;
	}
	.footer{
		padding-bottom: 94px;
	}
	.footer .copyright,.footer .ewm{
		padding-top: 100px;
	}
	.navbar-expand-lg .navbar-nav .nav-link{
		flex:1;
		padding-left: 0; 
		padding-right: 0;
		text-align: center;
	}
	.navbar-nav>.nav-item{
		display:flex;
		align-items:center;
		flex:1;
	}
	.navbar-nav>.nav-item+.nav-item:before{
		content:"|";
		color: #fff;
	}
	.dropdown-item{
		padding-left: 40px; 
		padding-right: 0;
	}
	.footer{
		background-image: url(/2021_ydp/images/bg_footer-blue.jpg);
	}
	
}
@media (min-width: 1440px){
	.container{
		max-width: 1400px;
	}
}