How to Keep a Form’s Height After Submission in Webflow

document.querySelectorAll('.w-form').forEach(function(wForm) {
  var form = wForm.querySelector('form');
  var success = wForm.querySelector('.w-form-done');
  if (!form || !success) return;
  form.addEventListener('submit', function() {
    var h = form.offsetHeight;
    setTimeout(function() {
      success.style.minHeight = h + 'px';
    }, 100);
  });
});

document.querySelectorAll('.form-wrapper').forEach(function(wrapper) {
  var form = wrapper.querySelector('form');
  if (!form) return;
  wrapper.style.minHeight = form.offsetHeight + 'px';
});