vercel.json

{
    "headers": [
      {
        "source": "/(.*)",
        "headers": [
          {
            "key": "Content-Security-Policy",
            "value": "default-src 'self'; base-uri 'self'; form-action 'self'; frame-src 'self'; frame-ancestors 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https://images.unsplash.com; connect-src 'self'; object-src 'none'; upgrade-insecure-requests; block-all-mixed-content"
          },
          {
            "key": "Permissions-Policy",
            "value": "interest-cohort=()"
          },
          {
            "key": "Referrer-Policy",
            "value": "no-referrer-when-downgrade"
          },
          {
            "key": "X-Content-Type-Options",
            "value": "nosniff"
          },
          {
            "key": "X-Frame-Options",
            "value": "SAMEORIGIN"
          },
          {
            "key": "X-XSS-Protection",
            "value": "1; mode=block"
          },
          {
            "key": "Cache-Control",
            "value": "public, max-age=0, must-revalidate"
          },
          {
            "key": "Strict-Transport-Security",
            "value": "max-age=31536000; includeSubDomains; preload"
          }
        ]
      }
    ]
  }