JSFiddle - React, Tailwind, and code Playground

HTML

<div class="man" id="man"></div>

SCSS

div {
  width: 100%;
  height: 100px;
  background: red;
}

JavaScript

var elem2= document.getElementsByClassName('man')[0];
console.log(elem2);
var elem6 = document.querySelector('.man');
console.log(elem6);
var elem7 = document.querySelectorAll('.man')[0];
console.log(elem7);