<title>Countdown Timer</title> <style> body { background: #2c3e50; color: #ecf0f1; font-family: Arial, sans-serif; display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100vh; margin: 0; }

h2 {
  margin-bottom: 10px;
}

input {
  padding: 10px;
  font-size: 16px;
  width: 150px;
  text-align: center;
  border-radius: 5px;
  border: none;
  margin-bottom: 15px;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  background: #e67e22;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.countdown {
  font-size: 48px;
  margin-top: 20px;
}

</style>

Countdown Timer

Start

00

<script> let interval; function startCountdown() { clearInterval(interval); let time = parseInt(document.getElementById("timeInput").value); const display = document.getElementById("countdownDisplay"); if (isNaN(time) || time < 1) {# Countdown-timer-