text: const boton = document.querySelector('#btn-video')
  
  function toggleButton() {
      if (boton.classList.contains('encender')) {
          boton.className = "btn btn-primary apagar"
          boton.textContent = "Apagar"
          //console.log("clase: " + boton.className)
      }  
      else if (boton.classList.contains('apagar')) {
          boton.textContent = "Encender"
          boton.className = "btn btn-primary encender"
          //console.log("clase: " + boton.className)
      }
  }