window.onresize = (function() { 
  let scale;
  let reCAPTCHA = document.querySelector(".g-recaptcha");
  let width = reCAPTCHA.parentElement.clientWidth;

  if (width < 302) {
    scale = width / 302;
  } else {
    scale = 1.0;
  }

  reCAPTCHA.style.cssText = "margin:0 auto; width: 'fit-content'; transform: scale(" + scale + 
    "); -webkit-transform: scale(" + scale + 
    "); transform-origin: top left; -webkit-transform-origin: top left;";

});