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+<html>
+
+<head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Lustre Animation Example</title>
+    <style>
+        head,
+        body {
+            margin: 0;
+            padding: 1em;
+            background: linear-gradient(to bottom, #ffaff3, white);
+        }
+    </style>
+    <link rel="stylesheet" href="lustre_animation.css" />
+</head>
+
+<body>
+    <script type="text/javascript" src="highlight.js"></script>
+    <h1>Lustre Animation</h1>
+    You can use this package within Gleam with
+    <pre><code class="language-bash">gleam add lustre_animation</code></pre>
+    You can get the repository with
+    <pre><code class="no-highlight">git clone https://git.chmeee.org/lustre_animation</code></pre>
+    <h1>Usage</h1>
+    The basic usage is
+    <ol>
+        <li>keep 1 `Animations` value</li>
+        <li>add animations by some trigger</li>
+        <li>call `animation.cmd()` on your value and let your lustre `update()` return it.
+            This will cause a dispatch on the next JS animation frame, unless all animations have finished (and
+            auto-removed).</li>
+        <li>update the animations with the new time.</li>
+        <li>evaluate for each animation you are interested in.</li>
+    </ol>
+    e.g. like this:
+    <pre><code class="language-gleam">import lustre/animation as a
+
+pub type Msg {
+    Trigger
+    Tick(Float)
+}
+
+pub fn update(model: Model, msg: Msg) {
+    let m = case msg of {
+        Trigger -> {
+            let new_anim = a.add(model.animations, "id", 1.0, 2.0, 0.250)
+            Model(1.0, animations: new_anim)
+        }
+        Tick(t) -> {
+            let new_anim = a.tick(model.animations, t)
+            let new_value = a.value(new_anim, "id", model.value)
+            Model(new_value, new_anim)
+        }
+    }
+    #(m, animation.cmd(m.animations, Tick))
+}</code></pre>
+
+    In the above <code>type Model</code>, <code>init</code> and <code>render</code> have been omitted.
+
+    <h1>Examples</h1>
+    Below are two working examples, of which the code is in the git repository.
+    <div style="display: flex; flex-wrap: wrap; overflow-y: auto; overflow-x: hidden;">
+        <div style="width: 320; margin-right: 2em;">
+            <h2>1. Two independent animations</h2>
+            <p>Click on the four buttons to manipulate the text horizontally,
+                and vertically.</p>
+            <p>See <code>./test/example_move_around.gleam</code></p>
+            <div id="root"
+                style="width: calc(320px - 2em); height: 480; border: 2px solid grey; padding: 0 1em 1em 1em;">
+                <h1>Lustre Animation Example</h1>
+                Please wait for the JavaScript (compiled Gleam) to take over.
+                <noscript>
+                    <p>This site needs JavaScript to run, please enable/allow it.</p>
+                </noscript>
+            </div>
+        </div>
+
+        <div style="width: 320;">
+            <h2>2. Many animations that are all 'the same'</h2>
+            <p>Each drop behaves in the same way. Click in the area to generate them.</p>
+            <p>See <code>./test/example_drops.gleam</code></p>
+            <div id="drops" style="width: calc(320px - 2em); height: 480; border: 2px solid grey; padding: 1em;">
+                <h1>Lustre Animation Example</h1>
+                Please wait for the JavaScript (compiled Gleam) to take over.
+                <noscript>
+                    <p>This site needs JavaScript to run, please enable/allow it.</p>
+                </noscript>
+            </div>
+        </div>
+    </div>
+    <script type="text/javascript" src="run_highlight.js"></script>
+    <script src="./test/start_examples.mjs" type="module"></script>
+</body>
+
+</html>