.capsa1 {
	position:fixed;
	background-color: #FFFFFF; 
	width:900px;
	height:70px;
	top:0;
	left:50%;
	margin-left:-450px;
	z-index: 5;
}
.capsa2 {
	position:fixed;
	width:500px;
	height:500px;
	top:70px;
	left:50%;
	margin-left:-450px;
	z-index: 5;
  box-shadow: 5px 5px 7px rgba(33,33,33,.7);
}
.capsa3 {
	position:absolute;
	width:380px;
	top:70px;
	left:50%;
	margin-left:70px;
	z-index: 3;
}