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HTML 

              
                <section class="filler">Please Scroll Down</section>
  
<section id="pinned-anim" class="our-schools-gsap ">
    <div class="cont">
        <div class="row">
            <div class="col our-schools-col">
                <div class="our-schools-slider-selector">
                  <div class="title">Our Schools</div>
                  <div class="our-schools-slider-item__title school-title-0 active" data-index="0">Nursery</div>
                  <div class="our-schools-slider-item__title school-title-1" data-index="1">Pre Prep</div>
                  <div class="our-schools-slider-item__title school-title-2" data-index="2">Junior</div>
                  <div class="our-schools-slider-item__title school-title-3" data-index="3">Senior</div>
                  <div class="our-schools-slider-item__title school-title-4" data-index="4">Sixth Form</div>
               </div>
          </div>
          <div class="col">
             <div class="articles">
                <div class="article slide-article relative-clone">
                </div>
                 <div class="article slide-article slide-1" id="article-1" data-slider_index="1">
                    <h3 class="animate_it active">Age 2 - 4</h3>
                    <h5>Nursery School</h5>
                    <p class="animate_it active">Lorem ipsum dollor sit amet</p>
                    <a class="arrow-button" href="#">
                      <div class="arrow-button__text">Link Text</div>
                      <div class="arrow-button__arrow right"><i></i></div>
                    </a>
                 </div>
                 <div class="article slide-article slide-2" id="article-2" data-slider_index="2">
                    <h3 class="animate_it active">Age 4 - 9</h3>
                    <h5>Pre Prep</h5>
                    <p class="animate_it active">Lorem ipsum dollor sit amet</p>
                    <a class="arrow-button" href="#">
                      <div class="arrow-button__text">Link Text</div>
                      <div class="arrow-button__arrow right"><i></i></div>
                    </a>
                 </div>
                 <div class="article slide-article slide-3" id="article-3" data-slider_index="3">
                    <h3 class="animate_it active">Age 9 - 13</h3>
                    <h5>Junior School</h5>
                    <p class="animate_it active">Lorem ipsum dollor sit amet</p>
                    <a class="arrow-button" href="#">
                      <div class="arrow-button__text">Link Text</div>
                      <div class="arrow-button__arrow right"><i></i></div>
                    </a>
                 </div>
                 <div class="article slide-article slide-4" id="article-4" data-slider_index="4">
                    <h3 class="animate_it active">Age 13 - 16</h3>
                    <h5>Senior School</h5>
                    <p class="animate_it active">Lorem ipsum dollor sit amet</p>
                    <a class="arrow-button" href="#">
                      <div class="arrow-button__text">Link Text</div>
                      <div class="arrow-button__arrow right"><i></i></div>
                    </a>
                 </div>
                 <div class="article slide-article slide-5" id="article-5" data-slider_index="5">
                    <h3 class="animate_it active">Age 16 - 18</h3>
                    <h5>Sixth Form College</h5>
                    <p class="animate_it active">Lorem ipsum dollor sit amet</p>
                    <a class="arrow-button" href="#">
                      <div class="arrow-button__text">Link Text</div>
                      <div class="arrow-button__arrow right"><i></i></div>
                    </a>
                 </div>
            </div>
        </div>
    </div>
</section>
  
<section class="filler">Thanks for looking</section>
!

CSS 

              
                * {
  box-sizing: border-box;
  font-family: verdana, sans-serif;
}
body {
  margin: 0;
  padding: 0;
}

$red: rgb(244, 22, 18);

#pinned-anim {
  
  background: linear-gradient(180deg, rgba(83, 86, 90, 0.5) -24.09%, rgba(213, 210, 210, 0) 58.11%);
  min-height: clamp(900px, 100vh, 1500px);
  @media(min-width: 992px) {
    max-height: 100vh;
    overflow: hidden;
  }
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 0;
  .cont {
    height: 100%;
    width: 100vw;
    .row {
      position: relative;
      display: flex;
      align-items: center;
      //justify-content: space-between;
      height: 100%;
      .col {
        display: flex;
        align-items: center;
        &.our-schools-col {
          background: $red;
          color: white;
          height: 100%;
          position: relative;
          z-index: 1;
          padding: 20px;
          @media(min-width: 992px) {
            padding: 30px 30px 30px 130px;
          }
          &:before {
              position: absolute;
              content: '';
              left: -10px;
              bottom: -90px;
              width: 300px;
              height: 450px;
              background-image: url('../assets/src/img/logo-white-opaque.png');
              background-size: 300px;
              background-repeat: no-repeat;
              background-position: bottom left;
              pointer-events: none;
          }
          &:after {
            background: $red;
            position: absolute;
            content: '';
            right: -200px;
            top: 0;
            width: 200px;
            height: 100%;
          }
          .our-schools-slider-item__title {
            font-family: "Rams W01", sans-serif;
            font-weight: 300;
            font-size: clamp(30px, 2.604vw, 50px);
            padding: 10px 0;
            cursor: pointer;
            &.active {
              font-weight: 700;
            }
          }
        }
        &:first-of-type {
          width: 40%;
        }
        &:last-of-type {
          width: 50%;
          position: relative;
          z-index: 2;
          display: flex;
          height: 100%;
          .articles {
            position: relative;
            display: flex;
            align-items: center;
            visibility: hidden;
            height: 80%;
            width: 100%;
            .article {
              width: 100%;
              display: flex;
              flex-direction: column;
              justify-content: flex-end;
              align-items: flex-start;
              position: absolute;
              left: 0;
              height: 100%;
              border-radius: 25px;
              color: white;
              padding: 40px 40px 80px;
              background-position: center;
              background-repeat: no-repeat;
              background-size: cover;
              background-image: url('https://cdn.pixabay.com/photo/2015/04/23/22/00/tree-736885__480.jpg');
              h3 {
                font-size: clamp(30px, 2.1vw, 40px);
                margin: 0;
                padding: 0;
                line-height: 1.2;
              }
              h5 {
                font-size: clamp(20px, 1.6vw, 25px);
                margin: 0;
                padding: 0;
                line-height: 1.2;
              }
              p {
                color: white;
                font-size: clamp(16px, 1.08vw, 20px);
                margin: 0;
                padding: 0;
              }
              a {
                color: white;
              }
              .arrow-button {
                margin-top: 25px;
                .arrow-button__text {
                  font-size: 20px;
                  font-weight: 600;
                  text-transform: uppercase;
                }
                .arrow-button__arrow {
                  background: white;
                  color: $red;
                }
              }
              &.relative-clone {
                position: relative;
                visibility: hidden;
              }
            }
          }
        }
      }
    }
  }
}

.filler {
  text-align: center;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp( 40px, 5.208vw, 100px);
  &:first-of-type {
      background: linear-gradient(360deg, rgba(83, 86, 90, 0.5) -24.09%, rgba(213, 210, 210, 0) 58.11%);
  }
}
!

JS 

              
                $(document).ready(function () {
    const $triggers = $('.our-schools-slider-item__title');

    const timeline = gsap.timeline({
        scrollTrigger: {
            trigger: "#pinned-anim",
            pin: "#pinned-anim",
            start: "top top",
            end: () => `+=100%`,
            pin: true,
            pinSpacing: true,
            scrub: 1,
            invalidateOnRefresh: true,
            markers: true
        },
    });

    function pinStats() {
        $('.articles').css({'visibility': 'visible'});
        timeline.fromTo(".slide-1", {y: 0}, {y: '-100vh'}, 0.5);
        timeline.fromTo(".slide-2", {y: '100vh'}, {y: 0,}, "<");
        timeline.to(".slide-2", {y:  '-100vh'}, "+=0.5");
        timeline.fromTo(".slide-3", {y: '200vh'}, {y: 0,}, "<");
        timeline.to(".slide-3", {y:  '-200vh'}, "+=0.5");
        timeline.fromTo(".slide-4", {y: '300vh'}, {y: 0,}, "<");
        timeline.to(".slide-4", {y:  '-300vh'}, "+=0.5");
        timeline.fromTo(".slide-5", {y: '100vh'}, {y: 0}, "<");
        timeline.to({}, {duration: 0.5});
    }

    function updateSlideIndicators() {
        // get the position of the timeline
        const position = timeline.time();

        // get the index of the active slide based on the position
        let activeIndex;
        if (position < 1) {
            activeIndex = 0;
        } else if (position < 2) {
            activeIndex = 1;
        } else if (position < 3) {
            activeIndex = 2;
        } else if (position < 4) {
            activeIndex = 3;
        } else {
            activeIndex = 4;
        }

        // update the active state of the slide indicators
        $('.our-schools-slider-item__title').removeClass('active');
        $('.our-schools-slider-item__title').eq(activeIndex).addClass('active');
    }

    function handleSlideIndicatorClick() {
        const index = $(this).data('index');
        // timeline.seek(index);
        $('.our-schools-slider-item__title').removeClass('active');
        $(this).addClass('active');
        jumpToSlide(index);
    }

    function jumpToSlide(index) {
        const currentPosition = timeline.time();

        const duration = '0.5';

        const jumpTimeline = gsap.timeline();
        jumpTimeline.fromTo('.articles', { y: currentPosition * 100 + 'vh' }, { y: '0vh', duration: duration, ease: 'power2.inOut' });

        timeline.seek(index);

        jumpTimeline.play();



        // scroll to the target section using GSAP
        gsap.to(window, {
            duration: 1,
            scrollTo: {
                y: $targetSection.offset().top
            },
            ease: "power2.inOut"
        });
    }


    $('.our-schools-slider-item__title').on('click', handleSlideIndicatorClick);

    timeline.eventCallback('onUpdate', updateSlideIndicators);

    window.addEventListener("load", function (event) {
        pinStats();
    });

});
!
999px

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