text: // Servidor
  const express = require('express')
  const server = express()
  
  const  {
      pageLanding,
      pageStudy,
      pageGiveClasses,
      saveClasses,
      pageSaveSuccess
  } = require('./pages')
  
  
  //configurar nunjucks (template engine)
  const nunjucks = require('nunjucks')
  nunjucks.configure('src/views', {
      express: server,
      noCache: true,
  })
  
  // Inicio e configuração do servidor
  server
  // receber os dados do req.body
  .use(express.urlencoded({ extended: true }))
  // configurar arquivos estáticos (css, scripts, imagens)
  .use(express.static("public"))
  // rotas da aplicação
  .get("/", pageLanding)
  .get("/study", pageStudy)
  .get("/give-classes", pageGiveClasses)
  .get("/save-success", pageSaveSuccess)
  .post("/save-classes", saveClasses)
  
  // start do servidor
  .listen(5500)