JSFiddle - React, Tailwind, and code Playground

by ExplosionPIlls

HTML

<div class="_f">asdf</div>
<div class="-f">asdf</div>
<div class="2f">asdf</div>

CSS

._f {
    color: blue;
}
.-f {
    color: green;
}
.2f {
    color: red;
}

JavaScript

console.log(document.querySelector("._f"));
console.log(document.querySelector(".-f"));
console.log(document.querySelector(".2f"));