feat: Header 추가

frontend/src/components/Header/Header.jsx

@@ -0,0 +1,38 @@
+import { Link } from 'react-router-dom';
+import styles from './Header.module.css';
+
+export default function Header() {
+  return (
+    <header className={styles.header}>
+      <nav className={styles.nav}>
+        <ul className={styles.group}>
+          <li>
+            <Link
+              to={'/'}
+              className={styles.logo}
+            >
+              Logo
+            </Link>
+          </li>
+          <li>
+            <Link to={'/'}>전체 강의</Link>
+          </li>
+          <li>
+            <Link to={'/'}>수강중인 강의</Link>
+          </li>
+          <li>
+            <Link to={'/'}>내 학습</Link>
+          </li>
+        </ul>
+        <ul className={styles.group}>
+          <li>
+            <Link to={'/'}>마이페이지</Link>
+          </li>
+          <li>
+            <Link to={'/'}>로그인</Link>
+          </li>
+        </ul>
+      </nav>
+    </header>
+  );
+}

frontend/src/components/Header/Header.module.css

@@ -0,0 +1,35 @@
+.header {
+  display: flex;
+  align-items: center;
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 80px;
+  background-color: var(--background);
+  border-bottom: 1px solid var(--border-color);
+}
+
+.nav {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 20px;
+  width: 100%;
+  max-width: 1320px;
+  padding: 0 40px;
+  margin: 0 auto;
+  font-size: 16px;
+  line-height: 1.4;
+  font-weight: 700;
+  color: var(--text-color);
+}
+
+.group {
+  display: flex;
+  align-items: center;
+  gap: 24px;
+  list-style: none;
+  padding: 0;
+  margin: 0;
+}

frontend/src/components/Header/index.js

@@ -0,0 +1 @@
+export { default as Header } from './Header';