A basic calculator application modeled after the Apple calculator design.

• Solidify fundamental Vanilla JavaScript knowledge including:
  • DOM manipulation
  • Event listeners
• CSS Grid

• Basic use of addition, subtraction, multiplication, division
• Clear functionality
• Displays error message if user divides by 0

• Limit the amount of global variables
• Refactor for cleaner, maintainable code - split code into multiple files
• Add +/= functionality
• Add % functionality
• Add full keyboard support