• nav-links.tsx 코드

'use client';

import {
  UserGroupIcon,
  HomeIcon,
  DocumentDuplicateIcon,
} from '@heroicons/react/24/outline';
import Link from 'next/link';
import { usePathname } from 'next/navigation';
import clsx from 'clsx';

// Map of links to display in the side navigation.
// Depending on the size of the application, this would be stored in a database.
const links = [
  { name: 'Home', href: '/dashboard', icon: HomeIcon },
  {
    name: 'Invoices',
    href: '/dashboard/invoices',
    icon: DocumentDuplicateIcon,
  },
  { name: 'Customers', href: '/dashboard/customers', icon: UserGroupIcon },
];

export default function NavLinks() {
  const pathname = usePathname();
  return (
    <>
      {links.map((link) => {
        const LinkIcon = link.icon;
        return (
          /*className="flex h-[48px] grow items-center justify-center gap-2 rounded-md bg-gray-50 p-3 text-sm font-medium hover:bg-sky-100 hover:text-blue-600 md:flex-none md:justify-start md:p-2 md:px-3"  */
          /* 주석을 넣을때는. 태그 안에 넣지 말고. 따로 빼서 넣도록 할 것.  */
          <Link
          key={link.name}
          href={link.href}
          className={clsx(
            'flex h-[48px] grow items-center justify-center gap-2 rounded-md bg-gray-50 p-3 text-sm font-medium hover:bg-sky-100 hover:text-blue-600 md:flex-none md:justify-start md:p-2 md:px-3',
            {
              'bg-sky-100 text-blue-600': pathname === link.href,
            },
          )}>
            <LinkIcon className="w-6" />
            <p className="hidden md:block">{link.name}</p>
          </Link>
        );
      })}
    </>
  );
}

• sidenav.tsx

import Link from 'next/link';
import NavLinks from '@/app/ui/dashboard/nav-links';
import AcmeLogo from '@/app/ui/acme-logo';
import { PowerIcon } from '@heroicons/react/24/outline';

export default function SideNav() {
  return (
    <div className="flex h-full flex-col px-3 py-4 md:px-2">
      <Link
        className="mb-2 flex h-20 items-end justify-start rounded-md bg-blue-600 p-4 md:h-40"
        href="/"
      >
        <div className="w-32 text-white md:w-40">
          <AcmeLogo />
        </div>
      </Link>
      <div className="flex grow flex-row justify-between space-x-2 md:flex-col md:space-x-0 md:space-y-2">
        <NavLinks />
        <div className="hidden h-auto w-full grow rounded-md bg-gray-50 md:block"></div>
        <form>
          <button className="flex h-[48px] w-full grow items-center justify-center gap-2 rounded-md bg-gray-50 p-3 text-sm font-medium hover:bg-sky-100 hover:text-blue-600 md:flex-none md:justify-start md:p-2 md:px-3">
            <PowerIcon className="w-6" />
            <div className="hidden md:block">Sign Out</div>
          </button>
        </form>
      </div>
    </div>
  );
}

• page.tsx 코드

import AcmeLogo from '@/app/ui/acme-logo';
import { ArrowRightIcon } from '@heroicons/react/24/outline';
import Link from 'next/link';
import styles from '@/app/ui/home.module.css';
import { lusitana } from '@/app/ui/fonts';
import Image from 'next/image';

export default function Page() {
  return (
    <main className="flex min-h-screen flex-col p-6">
      <div className={styles.shape} />
       {/*
        <div className="flex h-20 shrink-0 items-end rounded-lg bg-blue-500 p-4 md:h-52"> 
       */}
        { <AcmeLogo /> }
      {/* </div> */}
      <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="relative w-0 h-0 border-l-15 border-r-15 border-b-26 border-l-transparent border-r-transparent border-b-black"/>
          <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">
              Next.js Learn Course
            </a>
            , brought to you by Vercel.
          </p>
          <Link
            href="/login"
            className="flex items-center gap-5 self-start rounded-lg bg-blue-500 px-6 py-3 text-sm font-medium text-white transition-colors hover:bg-blue-400 md:text-base"
          >
            <span>Log in</span> <ArrowRightIcon className="w-5 md:w-6" />
          </Link>
        </div>
        <div className="flex items-center justify-center p-6 md:w-3/5 md:px-28 md:py-12">
          {/* Add Hero Images Here */}
          <Image
            src="/hero-desktop.png"
            width={1000}
            height={760}
            className="hidden md:block"
            alt="Screenshots of the dashboard project showing desktop version"
            />
             <Image
        src="/hero-mobile.png"
        width={560}
        height={620}
        className="block md:hidden"
        alt="Screenshot of the dashboard project showing mobile version"
      />
        </div>
      </div>
    </main>
  );
}