app.js

const hamburger = document.querySelector('.header .nav-bar .nav-list .hamburger');
const mobile_menu = document.querySelector('.header .nav-bar .nav-list ul');
const menu_item = document.querySelectorAll('.header .nav-bar .nav-list ul li a');
const header = document.querySelector('.header.container');
const options={
	bottom: '64px', // default: '32px'
  right: 'unset', // default: '32px'
  left: '32px', // default: 'unset'
  time: '0.5s', // default: '0.3s'
  mixColor: '#fff', // default: '#fff'
  backgroundColor: '#fff',  // default: '#fff'
  buttonColorDark: '#100f2c',  // default: '#100f2c'
  buttonColorLight: '#fff', // default: '#fff'
  saveInCookies: false, // default: true,
  label: '🌓', // default: ''
  autoMatchOsTheme: true // default: true

}
const darkmode = new Darkmode(options);
darkmode.showWidget();

hamburger.addEventListener('click', () => {
	hamburger.classList.toggle('active');
	mobile_menu.classList.toggle('active');
});

document.addEventListener('scroll', () => {
	var scroll_position = window.scrollY;
	if (scroll_position > 250) {
		header.style.backgroundColor = '#29323c';
	} else {
		header.style.backgroundColor = 'transparent';
	}
});

menu_item.forEach((item) => {
	item.addEventListener('click', () => {
		hamburger.classList.toggle('active');
		mobile_menu.classList.toggle('active');
	});
});