refactor: Create shared components and global styles for improved code organization

website/src/components/Section.tsx

@@ -0,0 +1,15 @@
+import styles from './Section.module.css';
+
+type SectionProps = {
+  children: React.ReactNode;
+  background?: 'default' | 'dark';
+  className?: string;
+};
+
+export function Section({ children, background = 'default', className = '' }: SectionProps) {
+  return (
+    <div className={`${styles.section} ${styles[background]} ${className}`}>
+      {children}
+    </div>
+  );
+}