Chapter 2 - add css module

app/page.tsx

@@ -1,3 +1,4 @@
+import styles from '@/app/ui/home.module.css';
 import AcmeLogo from '@/app/ui/acme-logo';
 import { ArrowRightIcon } from '@heroicons/react/24/outline';
 import Link from 'next/link';
@@ -11,6 +12,7 @@ export default function Page() {
       <div className="mt-4 flex grow flex-col gap-4 md:flex-row">
         <div className="flex flex-col justify-center gap-6 rounded-lg bg-gray-50 px-6 py-10 md:w-2/5 md:px-20">
           <div className="h-0 w-0 border-b-[30px] border-l-[20px] border-r-[20px] border-b-black border-l-transparent border-r-transparent"/>
+          <div className={styles.shape}></div>
           <p className={`text-xl text-gray-800 md:text-3xl md:leading-normal`}>
             <strong>Welcome to Acme.</strong> This is the example for the{' '}
             <a href="https://nextjs.org/learn/" className="text-blue-500">