index.js

let navbar = document.querySelector('.navbar');

document.querySelector('#menu-btn').addEventListener('click', () => {
    navbar.classList.toggle('active');
    searchForm.classList.remove('active');
    cartItem.classList.remove('active')
} )

let cartItem = document.querySelector('.cart-items-container');

document.querySelector('#cart-btn').addEventListener('click',()=>{
    cartItem.classList.toggle('active');
    navbar.classList.remove('active');
    searchForm.classList.remove('active');
})

let searchForm = document.querySelector('.search-form');

document.querySelector('#search-btn').addEventListener('click',()=>{
    searchForm.classList.toggle('active');
    navbar.classList.remove('active');
    cartItem.classList.remove('active')
})

window.onscroll = () =>{
    navbar.classList.remove('active');
    searchForm.classList.remove('active');
    cartItem.classList.remove('active')
}