body{
background-color: silver;

}

img {


width: 900px;
height: 600px;

}

#sign{
width: 900px;
height: 600px;
margin: 75px auto;
	
}
@media only screen and (max-width: 576px) {

#sign{

	margin: 0 auto;

}


    #sign img {

	width: 369px;
	height: 226px;
	margin: 200px auto;

}
        
}