No-Library (pure JS), HTML, CSS, JavaScript
Header/Body/Footer
\
float:left / ๋๋จธ์ง๋ hidden์ผ๋ก ์ฒ๋ฆฌํด๋ ๋๋ค
nth-of-type ์์์ ๋ฐ๋ฅธ ์์ฑ ๋ถ์ฌ
absolute