script.js

var acc = document.getElementsByClassName("accordion");
var i;
for (i = 0; i < acc.length; i++) {
    acc[i].onclick = function () {
        this.classList.toggle("active");
        var panel = this.nextElementSibling;
        if (panel.style.maxHeight) {
            panel.style.maxHeight = null;
        } else {
            panel.style.maxHeight = panel.scrollHeight + "px";
        }
    };
}

if ('serviceWorker' in navigator) {
    window.addEventListener('load', () => {
        navigator.serviceWorker.register('./serviceWorker.js').then(reg => {
            // Registration was successful
            // console.log('ServiceWorker registration successful with scope: ', reg.scope);
        }, err => {
            // registration failed :(
            // console.log('ServiceWorker registration failed: ', err);
        });
    });
}