JSFiddle - React, Tailwind, and code Playground

by Chun

HTML

<div id="fire-nav" class="menu">
  <span></span>
</div>

CSS

.menu span, .menu span:before, .menu span:after {
    content: "";
    display: block;
    height: 12px;
    width: 100%;
    background-color: #40d47e;
}

.menu {
    width: 85px;
    height: 36px;
    margin: 0 auto;
    padding-top: 24px;
    cursor: pointer;
}
.menu span:before {
    -webkit-transform: translate(0, -24px);
    transform: translate(0, -24px);
}
.menu span:after {
    -webkit-transform: translate(0, 12px);
    transform: translate(0, 12px);
}
.menu.open span {
    -webkit-transform: rotate(180deg);
    transform: rotate(180deg);
    -webkit-transition: 0.7s ease-in-out;
    transition: 0.7s ease-in-out;
}
.menu.open span:before {
    width: 60%;
    -webkit-transform: rotate(45deg) translate(20px, -40px);
    transform: rotate(45deg) translate(20px, -40px);
    -webkit-transition: 0.7s ease-in-out;
    transition: 0.7s ease-in-out;
}
.menu.open span:after {
    width: 60%;
    -webkit-transform: rotate(-45deg) translate(29px, 32px);
    transform: rotate(-45deg) translate(29px, 32px);
    -webkit-transition: 0.7s ease-in-out;
    transition: 0.7s ease-in-out;
}
.menu.close span {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
    -webkit-transition: 0.7s ease-in-out;
    transition: 0.7s ease-in-out;
}
.menu.close span:before {
    width: 100%;
    -webkit-transform: rotate(0deg) translate(0, -24px);
    transform: rotate(0deg) translate(0, -24px);
    -webkit-transition: 0.7s ease-in-out;
    transition: 0.7s ease-in-out;
}
.menu.close span:after {
    width: 100%;
    -webkit-transform: rotate(0deg) translate(0, 12px);
    transform: rotate(0deg) translate(0, 12px);
    -webkit-transition: 0.7s ease-in-out;
    transition: 0.7s ease-in-out;
}

JavaScript

var fireNav = document.getElementById('fire-nav');

function toggleMenu() {
    var menu = fireNav;

    if ( (' ' + menu.className + ' ').replace(/[\n\t]/g, ' ').indexOf('open') > -1 ) {
        menu.classList.add('close');
        setTimeout(function(){
            menu.classList.remove('open','close');
        }, 700);
    } else {
        menu.classList.add('open');
    }
}

fireNav.addEventListener('click', function(){
    toggleMenu();
});