.page {
  margin-left: auto;
  margin-right: auto;
  width: 960px;
}

#centro {
	height:1000px;
	}
	
.grid1,
.grid2,
.grid3,
.grid4,
.grid5,
.grid6,
.grid7,
.grid8,
.grid9,
.grid10,
.grid11,
.grid12 {
  float: left;
  margin-right: 10px;
}

.grid1 {
  width: 60px;
}

.grid2 {
  width: 140px;
}

.grid3 {
  width: 220px;
}

.grid4 {
  width: 300px;
}

.grid5 {
  width: 380px;
}

.grid6 {
  width: 460px;
}

.grid7 {
  width: 540px;
}

.grid8 {
  width: 620px;
}

.grid9 {
  width: 700px;
}

.grid10 {
  width: 780px;
}

.grid11 {
  width: 860px;
}

.grid12 {
  width: 940px;
}



.oh {
	overflow: hidden;
}

.ml {
	margin-left:10px;
}

.mr {
	margin-right:10px;
}

.mt {
	margin-top:10px;
}

.mb {
	margin-bottom:10px;
}