I require a browser-based countdown timer to be created in any language.
• The timer must be viewable in chrome from desktop or mobile and fill the screen.
• The timer will have a field allowing the user to enter the count down time.
• The timer will have START, STOP and RESET buttons.
• The timer will change colour from red to green as it counts down.
MORE DETAILED BRIEF ATTACHED WITH VISUALS - PLEASE READ FIRST