https://codepen.io/limyena/pen/oNVMZRe
position
...
codepen.io
-> relative가 부모역할
-> body가 부모역할
[hover]
https://codepen.io/limyena/pen/VwRBbjx
hover개념과 2차메뉴 연습하기
...
codepen.io
https://codepen.io/limyena/pen/OJqwmBL
hover 인접동생선택자
...
codepen.io
[2차메뉴]
