Good morning sir. My float is not display grid rows in reconditioning className. Thanks you sir.

// Created by Bob_Li Malick diagne codimed sa function changeColor (){ var tablerow = document.querySelector (".production table tr:nth-child(4) #quantite"); tablerow.innerHTML = 30; tablerow.style.backgroundColor = "red"; } //pour calculer le total quantite je dois selectionner toutes les quantités tr:nth-child (i) window.onload = function (){ var sum = 0; var el = parseInt(document.querySelector (".production table tr:nth-child(4) #quantite").innerHTML); var el2 = parseInt(document.querySelector (".production table tr:nth-child(5) #quantite2").innerHTML); sum = sum + el + el2 ; console.log (sum); }