.item1{background-image:url("../../../images/lv3_software_smartrol2.png");}
.item2{background-image:url("../../../images/smartrol_mod.png");}
.item3{background-image:url("../../../images/smartrol_opc.png");}
.item4{background-image:url("../../../images/lv3_software_app.png");}



.up_img1{
margin: 0px auto;
	margin-top: 25px;
	margin-bottom:25px;
	width: 100%;
content: url(../../../images/onoff_system_image.png);



	
}


.down_img1{
margin: 0px auto;
	margin-top:25px;

	width: 100%;
content: url(../../../images/elc_tree.jpg);



	
}
.video1{
	margin : 0px auto;
	width: 96%;
height: 700px;
background-color: #000;

}

.mess1{margin-top: 15px;}