text: 
  
  const express = require('express')
  const server = express()
  
  const {pageLanding, pageStudy, pageGiveClasses, saveClasses} = require('./pages')
  
  //configurar nunkucks
  const nunjucks = require('nunjucks')
  nunjucks.configure( 'src/views', {
      express: server,
      noCache: true,
  })
  
  
  server
  .use(express.urlencoded({ extended: true}))
  //configurar arquivos estáticos (css, scripts, imagens)
  .use(express.static("public"))
  //rotas de aplicação
  .get("/", pageLanding)
  .get("/study", pageStudy)
  .get("/give-classes", pageGiveClasses)
  .post("/save-classes", saveClasses)
  
  .listen(5500)