Pick a time, choose a sound and keep this tab open. Your alarms are remembered on this device.
Choose the alarm time, add an optional label, pick a sound and press Set alarm. You can add as many alarms as you like.
No. Keep the page open and the volume up. If your device sleeps, the browser can pause the page, so keep laptops and phones plugged in for long alarms.
Yes. When the alarm rings, press Snooze 5 min, or Stop to dismiss it.