JSFiddle - React, Tailwind, and code Playground

by ammgena

HTML

<div class="description-btn"> Узнать подробнее</div>

JavaScript

let learnmore = document.getElementsByClassName('description-btn'),
		learnmore_array = Array.prototype.slice.call(learnmore);
    
    learnmore_array.forEach(function(el){
        el.addEventListener('click', function(){
        overlay.style.display = 'block';
        this.classList.add('more-splash');
        document.body.style.overflow = 'hidden';  // блокирует скролл body при открытом МО 
        });
    });