CSS Cover

tl.set("#wipe-a", { x: -1920 }, T - 0.01);
tl.set("#wipe-b", { x: -1920 }, T - 0.01);
tl.to("#wipe-a", { x: 0, duration: 0.25, ease: "power3.inOut" }, T);
tl.to("#wipe-b", { x: 0, duration: 0.25, ease: "power3.inOut" }, T + 0.06);
tl.set(old, { opacity: 0 }, T + 0.2);
tl.set(new, { opacity: 1 }, T + 0.2);
tl.to("#wipe-a", { x: 1920, duration: 0.25, ease: "power3.inOut" }, T + 0.28);
tl.to("#wipe-b", { x: 1920, duration: 0.25, ease: "power3.inOut" }, T + 0.34);

for (var i = 0; i < N; i++) {
  tl.set("#blind-h-" + i, { x: -1920 }, T - 0.01);
  tl.fromTo("#blind-h-" + i, { x: -1920 }, { x: 0, duration: 0.2, ease: "power3.inOut" }, T + i * stagger);
}
tl.set(old, { opacity: 0 }, T + coverTime);
tl.set(new, { opacity: 1 }, T + coverTime);
for (var i = 0; i < N; i++) {
  tl.to("#blind-h-" + i, { x: 1920, duration: 0.2, ease: "power3.inOut" }, T + exitStart + i * stagger);
}