This counter has buttons to increase, decrease or reset the number value, and a dark/light mode toggle button - live here.
It has been made using simple DOM manipulation in JavaScript, and minimal CSS.

• Clicking on Minus, Plus and Reset buttons decrements, increments and sets the number count to zero respectively. They get colored when clicked.
• Hovering on the "Number Counter" heading scales itself.
• It has light theme initially, which can be changed to dark by clicking the toggle button with black and white dots.
• To change back to light theme from dark, double-click the same button.

• Minus
• Plus
• Medium Black Circle
• White Circle