JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width" />
    <link
          rel="stylesheet"
          href="https://cdn.jsdelivr.net/npm/@fancyapps/ui@5.0/dist/carousel/carousel.css"
          />
    <style>
      #myCarousel {
        --f-carousel-spacing: 10px;
        --f-carousel-slide-width: 60%;
      }

      #myCarousel .f-carousel__slide {
        padding: 50px;
        background: #eee;
      }
    </style>
  </head>
  <body>
    <div>

      <div class="f-carousel" id="myCarousel">
        <div class="f-carousel__slide">#1</div>
        <div class="f-carousel__slide">#2</div>
        <div class="f-carousel__slide">#3</div>
      </div>

      <p>
        <button id="addSlide">Add new slide at index: 2</button>
        <button id="prependSlide">Prepend new slide</button>
        <button id="appendSlide">Append new slide</button>
      </p>

    </div>
    <script src="https://cdn.jsdelivr.net/npm/@fancyapps/ui@5.0/dist/carousel/carousel.umd.js"></script>
    <script>
      const myCarousel = new Carousel(document.getElementById("myCarousel"), {
        //
      });

      document.getElementById("addSlide").addEventListener("click", () => {
        myCarousel.addSlide(2, {
          html: `Added slide in third position #${myCarousel.slides.length + 1}`,
        });
      });

      document.getElementById("prependSlide").addEventListener("click", () => {
        myCarousel.prependSlide({
          html: `Added a slide at the start #${myCarousel.slides.length + 1}`,
        });
      });

      document.getElementById("appendSlide").addEventListener("click", () => {
        myCarousel.appendSlide({
          html: `Added a slide at the end #${myCarousel.slides.length + 1}`,
        });
      });
    </script>
  </body>
</html>