#tabela {
  width: 430px;
  text-align: center;
}

#tabelas {
  display: flex;
}

#tabelaDir {
  margin-left: 10px;
}

@media (max-width: 420px) {
  #tabela {
    display: flex;
    flex-direction: column;
  }
  #tabelas {
    flex-direction: column;
  }
  #tabelaEsq,
  #tabelaDir {
    margin-bottom: 10px;
  }
  #tabelaDir {
    margin-left: 0px;
  }
}