2뎁스 메뉴에 특수문자 (∨)의 삽입

Character Entities ∨의 삽입

li > a:after {content:" \2228";}

UNICODE : U+02228

HEX CODE : ∨

HTML CODE : ∨

HTML ENTITY : ∨

CSS CODE : \2228

// html example

<span>&#8744;</span>

// css example

span {content: "\2228";}

Referances :

Logical Or HTML Symbol, Character and Entity Codes : https://www.toptal.com/designers/htmlarrows/math/logical-or/

Unicode Character 'LOGICAL OR' (U+2228) : https://www.fileformat.info/info/unicode/char/2228/index.htm

Character Entities : http://brajeshwar.github.io/entities/

Special Characters : https://css-tricks.com/snippets/html/glyphs/

[감성 퍼블리셔 html,css - HTML 특수문자 메뉴보기 : http://maen2001.tistory.com/3

가상 요소(pseudo-elements) 알아보기 : http://webst.funnycom.net/tag/가상-요소/