Add react Card component

src/components/Card.tsx

@@ -0,0 +1,24 @@
+import Datetime from "./Datetime";
+import type { Frontmatter } from "@utils/types";
+
+export interface Props {
+  href?: string;
+  post: Frontmatter;
+}
+
+export default function Card({ href, post }: Props) {
+  return (
+    <li className="my-6">
+      <a
+        href={href}
+        className="text-skin-accent font-medium text-lg underline-offset-4 decoration-dashed focus-visible:underline"
+      >
+        <h2 className="font-medium text-lg decoration-dashed hover:underline">
+          {post.title}
+        </h2>
+      </a>
+      <Datetime datetime={post.datetime} />
+      <p>{post.description}</p>
+    </li>
+  );
+}