Make the list of items in Rollbar wider.

manifest.json

{
  "name": "Rollbar",
  "version": "1.0",
  "description": "Make the list of items in Rollbar wider.",
  "content_scripts": [
    {
      "matches": ["https://rollbar.com/*"],
      "css": ["rollbar.css"]
    }
  ],
  "applications": {
    "gecko": {
      "id": "@."
    }
  },
  "manifest_version": 2
}

rollbar.css

@media (min-width: 1500px) {
  .bs4-container {
    max-width: 95% !important;
  }
}