mdbook-embedify 0.3.2

A rust based mdbook preprocessor plugin that allows you to embed apps to your book, like youtube, codepen, giscus and many other apps
Documentation 
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<style>
  .scroll-to-top {
    font-size: 2.5rem;
    width: 3.2rem;
    height: 3.2rem;
    display: none;
    align-items: center;
    justify-content: center;
    position: fixed;
    padding: 0.75rem;
    bottom: 4rem;
    right: calc(1.25rem + 90px + var(--page-padding));
    z-index: 999;
    cursor: pointer;
    border: none;
    color: var(--bg);
    background: var(--fg);
    border-radius: 50%;
  }
  .scroll-to-top.hidden {
    display: none;
  }
  .scroll-to-top i {
    transform: translateY(-2px);
  }
  @media (min-width: 1080px) {
    .scroll-to-top {
      display: flex;
    }
  }
</style>
<button type="button" aria-label="scroll-to-top" class="scroll-to-top hidden" onclick="scrollToTop()">
  <svg
    width="24"
    height="24"
    viewBox="0 0 24 24"
    fill="none"
    stroke="currentColor"
    stroke-width="2"
    stroke-linecap="round"
    stroke-linejoin="round"
    xmlns="http://www.w3.org/2000/svg"
  >
    <path d="m18 15-6-6-6 6"></path>
  </svg>
</button>
<script>
  const scrollToTop = () => window.scroll({ top: 0, behavior: "smooth" });
  window.addEventListener("scroll", () => {
    const button = document.querySelector(".scroll-to-top");
    button.classList.toggle("hidden", window.scrollY < 200);
  });
</script>