var LOGO_INIT = 0;
function handleSticky() {
  const logo = document.querySelector('.logo');
  const logoCircle = document.querySelector('.logo-circle');
  if (window.scrollY >= LOGO_INIT) {
    logo.classList.add('stickied');
    logoCircle.classList.add('stickied');
  } else {
    logo.classList.remove('stickied');
    logoCircle.classList.remove('stickied');
  }
}
window.onload = function () {
  LOGO_INIT = document.querySelector('.logo').offsetTop;
  window.addEventListener('scroll', this.handleSticky);
};