 timeUnit: "   segundo...",
                welcomeMessage: "Saltar automáticamente después de"
            }
        };

        function changeLanguage() {
            const lang = document.getElementById('languageSelect').value;
            const container = document.getElementById('mainContainer');
            if (lang === 'es') {
                container.classList.add('expanded');
            } else {
                container.classList.remove('expanded');
            }
            document.document