ActualKeith

function scrollToBottom(duration) {
  const currentPosition = window.pageYOffset;
  const targetPosition = document.documentElement.scrollHeight - window.innerHeight;
  const distance = targetPosition - currentPosition;
  const startTime = performance.now();

  function scrollStep(timestamp) {
    const elapsed = timestamp - startTime;
    const progress = Math.min(elapsed / duration, 1);
    const easing = quadraticEaseInOut(progress);