toggle css

gistfile1.txt

  themeToggle.addEventListener('click', () => {
            const html = document.documentElement;
            const currentTheme = html.getAttribute('data-theme');
            const newTheme = currentTheme === 'light' ? 'dark' : 'light';
            html.setAttribute('data-theme', newTheme);
            // Update the button icon
            if (newTheme === 'dark') {
                moonIcon.style.display = 'none';
                sunIcon.style.display = 'block';
            } else {
                moonIcon.style.display = 'block';
                sunIcon.style.display = 'none';
            }
            // Save user preference
            localStorage.setItem('finance-tracker-theme', newTheme);
        });