@media only screen and (max-width : 1380px) {
	#header{
		background-image: url(../images/bg_header.jpg);
		background-size: cover;
		background-repeat: no-repeat;
		background-position: center center;
		height: 270px;
	}
	.header-holder,.header-holder:after{background: none;}
	.header-holder{padding: 50px 0 0 0;}
	.logo{
		width: 150px;
		height: 180px;
		margin: 15px 220px 0 0;
		text-indent: -9999em;
		background: url(../images/logo_m.png) no-repeat;
	}
	.certificate_box{margin-top: 80px;}
	.nav-bar{margin: 75px 0 0 155px;}
}
@media only screen and (max-width : 1250px) {
	#about_container{
		float: none;
		width: 100%;
		padding: 0;
		margin: 0 auto;
	}
	#sidebar{
		float: none;
		width: 377px;
		margin: 20px auto;
	}
	.list_products_holderbox ul{text-align: center;}
	#sidebar .widget_contact{margin: 20px auto 0;}
}
@media only screen and (max-width : 1225px) {
	.logo{margin: 15px 15% 0 0;}
	.nav-bar{margin: 75px 0 0 0;}
	.certificate_box{margin: 80px 15% 0 0;}
}
@media only screen and (max-width : 1190px) {
	.certificate_box{margin: 80px 10% 0 0;}
}
@media only screen and (max-width : 1125px) {
	.logo{margin: 15px 10% 0 0;}
}
@media only screen and (max-width : 1040px) {
	.logo{margin: 15px 10% 0 0;}
	.certificate_box{margin: 80px 5% 0 0;}
}
@media only screen and (max-width : 990px) {
	.header-frame{overflow: hidden;}
	.nav-bar{
		float: none;
		margin: 40px 0 0 0;
	}
	#header{
		height: auto;
		/* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#0055e0+0,0049b4+61,003a7c+100 */
		background: rgb(0,85,224); /* Old browsers */
		background: -moz-linear-gradient(top, rgba(0,85,224,1) 0%, rgba(0,73,180,1) 61%, rgba(0,58,124,1) 100%); /* FF3.6-15 */
		background: -webkit-linear-gradient(top, rgba(0,85,224,1) 0%,rgba(0,73,180,1) 61%,rgba(0,58,124,1) 100%); /* Chrome10-25,Safari5.1-6 */
		background: linear-gradient(to bottom, rgba(0,85,224,1) 0%,rgba(0,73,180,1) 61%,rgba(0,58,124,1) 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
		filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#0055e0', endColorstr='#003a7c',GradientType=0 ); /* IE6-9 */
		position: relative;
	}
	.header-holder{
		padding: 40px 0 20px;
		width: 580px;
		margin: 0 auto;
	}
	.certificate_box{
		float: right;
		margin: 80px 0 0 0;
	}
	#nav{text-align: center;}
	#nav li{
		float: none;
		display: inline-block;
	}

}
@media only screen and (max-width : 780px) {
	.removeclass{display: none;}
}
@media only screen and (max-width : 600px) {
	.header-holder{
		width: 100%;
	}
	.logo{
		float: none;
		margin: 0 auto 20px;
		display: block;
	}
	.certificate_box{
		float: none;
		margin: 0 auto ;
		display: block;
	}
	#nav-icon {display: block;}
	.nav-bar {
		float: none;
		margin: 0 -10px;
	}
	#nav {
		display: none;
		width: 100%;
		padding: 0;
		margin: 20px 0;
	}

	#nav li {
		float: none;
		text-align: center;
		margin: 0;
		display: block;
		padding: 0;
	}
	#main{padding: 52px 0 52px;}
}

@media only screen and (max-width : 400px) {
	#sidebar{
		width: 300px;
	}
	#sidebar .widget_news{
		width: auto;
		height: auto;
		background-size: contain;
		margin: 0 10px 0 0;
	}
	.certificate_box,.certificate_box img{width: 100%;height: auto;}
	.list_products_holderbox ul{margin: 0;}
}