body {
	background-image: url(../img/background.jpg);

}

header {
	background-image: url(../img/osuchane.png);
	background-repeat: no-repeat;
	background-position: center center;
	margin-left: -50px;
	height: 100%;
	text-indent: -100000px;
}
.none {
	display: none;
}

@media only screen and (max-width: 40em) { header {  background-size: cover; width: 100%; height: 300px; margin-left: -5px; } } 
@media only screen and (min-width: 40.063em) and (max-width: 64em) { header { background-size: cover; width: 100%; height: 550px; margin-left: 0px; } }