title: Google forms API : how to add custom css via code edit?
body: <p>I need to custom a google form, want to hide google logo and back button on second section
  i tried a function like this :</p>
  
  <pre><code>function myFunctioncss() {
  function onOpen() {
  
  var myLogoDeGoogle = document.querySelector(".freebirdFormviewerViewFooterImageContainer.freebirdFormviewerViewFooterPageBreak");
  myLogoDeGoogle.style.display = "none";
  var myBoutonRetour = document.querySelector(".quantumWizButtonPaperbuttonEl.quantumWizButtonPaperbuttonFlat.quantumWizButtonPaperbutton2El2.freebirdFormviewerViewNavigationNoSubmitButton");
  myBoutonRetour.style.display = "none";
  var myTitreTest = document.querySelector(".freebirdFormviewerViewItemsItemItemTitle.freebirdCustomFont");
  myTitreTest.style.color = "red";
  var myFond = document.querySelector(".freebirdFormviewerViewFormContent");
  myFond.style.background = "green";
  
  }
  }
  </code></pre>
  
  <p>With a trigger on form open.
  Not Errors but it does not change anything on the form.</p>
  
  <p>All ideas will be welcome..</p>