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>
  .announcement-banner {
    --site-announcement-bar-stripe-color1: #e5e7eb;
    --site-announcement-bar-stripe-color2: #d1d5db;
    z-index: 150;
    position: relative;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 1rem 3.5rem;
    background: repeating-linear-gradient(
      45deg,
      var(--site-announcement-bar-stripe-color1),
      var(--site-announcement-bar-stripe-color1) 20px,
      var(--site-announcement-bar-stripe-color2) 10px,
      var(--site-announcement-bar-stripe-color2) 40px
    );
  }
  html:is(.navy, .coal, .ayu) .announcement-banner {
    --site-announcement-bar-stripe-color1: #1f2937;
    --site-announcement-bar-stripe-color2: #111827;
  }
  .announcement-banner p {
    color: var(--fg);
    width: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    text-align: center;
    white-space: nowrap;
    text-overflow: ellipsis;
    text-wrap: balance;
  }
  .announcement-banner button[data-close] {
    top: 50%;
    right: 1rem;
    position: absolute;
    transform: translateY(-50%);
    width: 3rem;
    height: 3rem;
    cursor: pointer !important;
    border: none;
    font-weight: 900;
    border-radius: 50%;
    background-color: transparent;
  }
</style>
<div style="display: none" data-id="{% id %}" class="announcement-banner">
  {% markdown(message) %}
  <button type="button" data-close>X</button>
</div>
<script>
  (() => {
    const banner = document.querySelector(".announcement-banner");
    const id = banner.getAttribute("data-id");
    const message = banner.querySelector("p").textContent;
    const localData = JSON.parse(localStorage.getItem("mdbook-announcement-banner"));
    if (!localData || localData.id !== id || localData.hide !== true) {
      banner.style.display = "flex";
      const page = document.querySelector(".page");
      page.parentNode.insertBefore(banner, page);
      banner.querySelector("button").addEventListener("click", () => {
        banner.remove();
        localStorage.setItem("mdbook-announcement-banner", JSON.stringify({ id, hide: true, message }));
      });
    }
  })();
</script>