body {
	background-image: url();
	background-repeat: no-repeat;
	background-size: 100%;
}

#box1 {
	border-width: 2px;
	Border-style: solid;
	border-radius: 20px;
	border-color: blue;
	width: 500px;
	height: 550px;
	margin: auto;
	padding: 10px;
}
#box2 {
	border-width: 2px;
	Border-style: solid;
	border-radius: 20px;
	border-color: blue;
	width: 500px;
	height: 550px;
	margin: left;
	padding: 10px;
}
#box3 {
	border-width: 2px;
	Border-style: solid;
	border-radius: 20px;
	border-color: blue;
	width: 500px;
	height: 350px;
	margin: left;
	padding: 10px;
}





#u{
margin: center 
}