Examine source code of Math Flashcards Basic

{
  "manifest_version": 2,
  "name": "Math Flashcards Basic",
  "version": "1.0",
  "description": "Here we will build an interactive Introducing Math Flashcards web application, that will help in enhancing mathematical skills like addition, subtraction, multiplication, and division in a playful manner.",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/math-logo.png"
    }
  },
  "icons": {
    "128": "images/math-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a9a5eaf0-275e-4b2b-925a-dad9f60eb8d6}"
    }
  }
}