01:00:00

.countdown-timer { font-size: 24px; font-weight: bold; color: #ff0000; text-align: center; background-color: #fff3cd; padding: 10px 20px; border-radius: 8px; display: inline-block; box-shadow: 0 0 10px rgba(0, 0, 0, 0.1); } function startCountdown(durationInSeconds) { let timer = durationInSeconds, hours, minutes, seconds; let countdownElement = document.getElementById("countdown"); let interval = setInterval(function () { hours = Math.floor(timer / 3600); minutes = Math.floor((timer % 3600) / 60); seconds = timer % 60; countdownElement.textContent = (hours < 10 ? "0" : "") + hours + ":" + (minutes < 10 ? "0" : "") + minutes + ":" + (seconds < 10 ? "0" : "") + seconds; if (--timer < 0) { clearInterval(interval); countdownElement.textContent = "Time's up!"; } }, 1000); } // Start the countdown for 1 hour (3600 seconds) startCountdown(3600);