body 

{
	background-image:url(../img/2000px_background.jpg); 
	background-size: 100% auto;
	background-repeat:no-repeat;
	
	}
	
	#nav {
	opacity:0.8;	
	
	}
	
	.img_home {
	width:450px;
	float:left; 
	position:absolute; 
	top:100px; 
	left:0px;
	}


	
@media only screen and ( max-width: 1400px ) {
	body {
	background-image:url(../img/1500px_background.jpg); 
	background-size: 100% auto;
	background-repeat:no-repeat;
	}
	#nav {
	opacity:1;	
	}
	
	#content {
		min-height:550px;
	}
	}
	
	@media only screen and ( max-width: 1000px ) {
	body {
	background-image:url(../img/1100px_background.jpg); 
	background-size: 100% auto;
	background-repeat:no-repeat;
	}
	#nav {
	opacity:1;	
	}
	
	#content {
		min-height:500px;
	}
	}

@media only screen and ( max-width: 500px ) {
	body {
	background-image:url(../img/800px_background.jpg); 
	background-size: 100% auto;
	background-repeat:no-repeat;
	}
	#content {
		min-height:350px;
	}
	#nav {
	opacity:1;	
	
	}
	
	.img_home {
	width:250px;
	top:80px; 
	}
	
	
	
	}