/*CONTEÚDO*/
.conteudo{
width: 1050px;
height: 520px;
margin-left: auto;
margin-right:auto;
}

.coluna1{
width: 330px;
float:left;
margin-top: 15px;
}

.coluna2{
width: 330px;
float:left;
margin-left: 20px;
margin-top: 15px;
}

.coluna3{
width: 350px;
float:left;
margin-left: 20px;
margin-top: 15px;
}

.box{
height: 210px;
background:rgba(255,255,255,.5);
padding:10px;
}