Code conventions

General

• Avoid repeating code. (DRY)

JavaScript

• JavaScript must pass JSHint.
• Start object names with a lowercase character unless it is intended to be created with the new keyword.

HTML

• Use 2 spaces to indent.
• Avoid lines longer than 120 characters.
• Do not write CSS in HTML.
• Do not write JS in HTML.
• Use double quotes for attributes.

CSS

• Make Terry happy.