added minimal astro adapter + improved the example

examples/astro/src/components/Card.astro

@@ -0,0 +1,73 @@
+---
+interface Props {
+   title: string;
+   body: string;
+   done?: boolean;
+}
+
+const { done, title, body } = Astro.props;
+---
+
+<li class="link-card" data-done={done ? 1 : undefined}>
+	<div class="inner">
+		<div class="check">
+			<span>{done ? "✅" : "🔘"}</span>
+		</div>
+		<h2>
+			{title}
+		</h2>
+		<p>
+			{body}
+		</p>
+	</div>
+</li>
+<style>
+	.link-card {
+		list-style: none;
+		display: flex;
+		padding: 1px;
+		background-color: #23262d;
+		background-image: none;
+		background-size: 400%;
+		border-radius: 7px;
+		background-position: 100%;
+		transition: background-position 0.6s cubic-bezier(0.22, 1, 0.36, 1);
+		box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
+	}
+		.link-card[data-done] {
+			background-color: #0c3e29;
+		}
+	.link-card > .inner {
+		position: relative;
+		width: 100%;
+		text-decoration: none;
+		line-height: 1.4;
+		padding: calc(1.5rem - 1px);
+		border-radius: 8px;
+		color: white;
+		background-color: #23262d;
+		opacity: 0.8;
+	}
+	.inner .check {
+		position: absolute;
+		top: 0.75rem;
+		right: 0.75rem;
+	}
+
+	h2 {
+		margin: 0;
+		font-size: 1.25rem;
+		transition: color 0.6s cubic-bezier(0.22, 1, 0.36, 1);
+	}
+	p {
+		margin-top: 0.5rem;
+		margin-bottom: 0;
+	}
+	.link-card:is(:hover, :focus-within) {
+		background-position: 0;
+		background-image: var(--accent-gradient);
+	}
+	.link-card:is(:hover, :focus-within) h2 {
+		color: rgb(var(--accent-light));
+	}
+</style>