Left Right Double Arrow
⇔
UNICODE
U+021D4HEX CODE
⇔HTML CODE
⇔HTML ENTITY
⇔CSS CODE
\21D4 // html example
<span>⇔</span> // css example
span {
content: "\21D4";
} ⇔
U+021D4⇔⇔⇔\21D4 // html example
<span>⇔</span> // css example
span {
content: "\21D4";
}