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HTML

              
                <section>
  <div>
    <h2>This is a <span class="go-red">headline</span></h2>
    <p>Fusce ultrices tempor augue, hendrerit cursus purus accumsan non. Duis bibendum placerat justo quis posuere. Nunc ac scelerisque ligula. Vestibulum aliquam odio a malesuada commodo. Phasellus ut lacus sed nibh egestas commodo. Nulla orci dui, bibendum nec vestibulum eget, efficitur in mauris. Cras nibh erat, lacinia et dictum eget, faucibus id augue. Nunc nec arcu massa. Ut sed accumsan lacus. Maecenas pharetra ante at leo porta lacinia.</p>
  </div>
</section>
<section>
  <div>
    <h2>This is a <span class="go-red">headline</span></h2>
    <p>Fusce ultrices tempor augue, hendrerit cursus purus accumsan non. Duis bibendum placerat justo quis posuere. Nunc ac scelerisque ligula. Vestibulum aliquam odio a malesuada commodo. Phasellus ut lacus sed nibh egestas commodo. Nulla orci dui, bibendum nec vestibulum eget, efficitur in mauris. Cras nibh erat, lacinia et dictum eget, faucibus id augue. Nunc nec arcu massa. Ut sed accumsan lacus. Maecenas pharetra ante at leo porta lacinia.</p>
  </div>
</section>
<section>
  <div>
    <h2>This is a <span class="go-red">headline</span></h2>
    <p>Fusce ultrices tempor augue, hendrerit cursus purus accumsan non. Duis bibendum placerat justo quis posuere. Nunc ac scelerisque ligula. Vestibulum aliquam odio a malesuada commodo. Phasellus ut lacus sed nibh egestas commodo. Nulla orci dui, bibendum nec vestibulum eget, efficitur in mauris. Cras nibh erat, lacinia et dictum eget, faucibus id augue. Nunc nec arcu massa. Ut sed accumsan lacus. Maecenas pharetra ante at leo porta lacinia.</p>
  </div>
</section>
              
            
!

CSS

              
                section {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
section div {
  max-width: 500px;
}
              
            
!

JS

              
                let items = gsap.utils.toArray('.go-red')

items.forEach((item) => {
  gsap.to(item, 1.5, {
  scrollTrigger: item,
  color: "red"
})
})

              
            
!
999px

Console