<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>문서 제목</title> </head> <body> <!-- 웹 페이지 내용이 여기에 들어갑니다 --> </body> </html> Header navigation bar main content sidebar footer Grid 0 ~ 639 (360): 8 margin, 16 gutter, 4 col 640 ~ 1023 (768): 24 margin, 16 gutter, 8 col 1023 ~ 1439(1024): 24 margin, 24 gutter, 12 col 1440 ~ (1440): 24 margin, 24 margin, 12 col TailwindCSS