move to PostPreview.js component

components/PostPreview.js

@@ -0,0 +1,19 @@
+import styles from "../styles/Home.module.css";
+import Link from "next/link";
+import ClickForMore from "./ClickForMore";
+
+function PostPreview({ title, description, date, href }) {
+  return (
+    <Link href={href} passHref>
+      <section className={styles.postPreview}>
+        <h2>{title}</h2>
+        <p>{description}</p>
+        <small>发布于 {date}</small>
+        {" | "}
+        <ClickForMore />
+      </section>
+    </Link>
+  );
+}
+
+export default PostPreview;