#servicos{
float:left;
width:765px;
height: 100%;
}

#servicos .itens{
float: left;
width: 427px;
margin: 0 0 20px 20px;
}

#conteudo .linhas{
float: left;
width: 765px;
margin-top: 20px;
text-align: center;
}

#conteudo .colunas{
float: left;
width: 377px;
margin: 8px 0 8px 0;
}