JSFiddle - React, Tailwind, and code Playground

by afelixj

HTML

<div class="btn-menu"><a href=""><span></span></a></div>
<div class="menu-bg"></div>

CSS

.btn-menu{
  width: 30px;
  height: 30px;
  border: 2px solid red;
  position: relative;
  z-index: 5;
  float: right;
}
.menu-bg {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 100%;
    z-index: 40;
    pointer-events: none;
    z-index: 1;
}
.menu-bg:before {
    content: '';
    height: 1px;
    width: 1px;
    background: #000;
    position: fixed;
    right: 30px;
    top: 30px;
    transition: all ease .3s;
    border-radius: 50%;
    transform: scale(1);
}
.menu-open .menu-bg:before {
    transition: all ease .6s;
    transform: scale(500);
    border-radius: 50%;
}

JavaScript

var menuButton = document.querySelector('.btn-menu');
        menuButton.addEventListener('click', function(e){
            e.preventDefault();
            document.body.classList.toggle('menu-open');
        });