From 100 Days of JavaScript: https://www.udemy.com/share/104x4Y3@JqGpJmpCDp4i7eEdPa3B8W3d8RNpoEPq52UEmVWfkW_z0zhV6D9wCX68wRKeAxrO/

• Counter Header with basic background color
• Text is white for contrast against background color
• 3 Buttons: Subtract | Reset | Add
• Color of count text changes when counter number goes negative
• Color of count text is white at 0 or greater
• When Subtract is clicked, counter number reduces by 1 whole number.
• When Reset is clicked, counter number defaults to 0.
• When Add is clicked, counter number increased by 1 whole number.