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<h1 id="quote">What does the fox say to the <span class="special">@person</span> at the store?</h1>



looks like split text eats up the special class?

this only works without SplitTextPlugin
span.special {
  color: red;

targets only the 8th word
after SplitTextPlugin runs
h1 > div:nth-child(0n+8){



See for details. 
This demo uses SplitText which is a membership benefit of Club GreenSock,

var tl = new TimelineLite,
  mySplitText = new SplitText("#quote", {
    type: "words,chars",
    charsClass: "special"
  tl = new TimelineMax({
    delay: 0.5,
    repeat: 10000,
    repeatDelay: 2.2
  chars = mySplitText.chars;

TweenLite.set("#quote", {
  perspective: 400

tl.staggerFrom(chars, 0.8, {
  opacity: 0,
  scale: 0,
  y: 80,
  rotationX: 180,
  transformOrigin: "0% 50% -50",
  ease: Back.easeOut
}, 0.01, "+=0");