Refactored to use app folder.

src/components/layout/PageHeader.tsx

@@ -0,0 +1,20 @@
+import classNames from 'classnames';
+import React, { ReactNode } from 'react';
+import styles from './PageHeader.module.css';
+
+export interface PageHeaderProps {
+  title?: string;
+  className?: string;
+  children: ReactNode;
+}
+
+export function PageHeader({ title, className, children }: PageHeaderProps) {
+  return (
+    <div className={classNames(styles.header, className)}>
+      {title && <div className={styles.title}>{title}</div>}
+      <div className={styles.actions}>{children}</div>
+    </div>
+  );
+}
+
+export default PageHeader;