manifest.json

{
  "name": "Enhanced Steam",
  "description": "Modernizes the Steam UI",
  "version": "1.0",
  "manifest_version": 3,
  "permissions": [
    "tabs"
  ],
  "host_permissions": [
    "*://*.steampowered.com/*",
    "*://steamcommunity.com/*"
  ],
  "content_scripts": [
    {
      "matches": ["*://*.steampowered.com/*", "*://steamcommunity.com/*"],
      "css": [ "./css/global.css" ],
      "js": [ "./js/global.js" ]
    },
    {
      "matches": ["*://help.steampowered.com/*"],
      "css": [ "./css/help.css" ]
    },
    {
      "matches": ["*://*.steampowered.com/agecheck/*"],
      "css": [ "./css/store/agecheck.css" ],
      "js": ["./js/store/agecheck.js"]
    },
    {
      "matches": ["*://steamcommunity.com/market/*"],
      "css": [ "./css/community/market.css" ]
    },
    {
      "matches": ["*://*.steampowered.com/app/*"],
      "css": [ "./css/store/app.css" ],
      "js": ["./js/store/app.js"]
    },
    {
      "matches": ["*://*.steampowered.com/cart/*"],
      "css": [ "./css/store/cart.css" ]
    },
    {
      "matches": ["*://steamcommunity.com/profiles/*/games/*", "*://steamcommunity.com/id/*/games/*"],
      "css": ["./css/community/profile/games.css"],
      "js": ["./js/community/profile/games.js"]
    },
    {
      "matches": ["*://steamcommunity.com/stats/*/achievements*", "*://steamcommunity.com/profiles/*/stats/*/achievements*"],
      "css": ["./css/community/profile/achievements.css"],
      "js": ["./js/community/profile/achievements.js"]
    }
  ]
}