server {
    listen 80;
    server_name localhost;

    root /usr/share/nginx/html;
    index index.html river-rooks.html;

    # Disable Nginx version tokens
    server_tokens off;

    # Security Headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;

    # Gzip Asset Compression
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
    gzip_min_length 256;

    # Clean URL Routing
    location / {
        try_files $uri $uri/ $uri.html =404;
    }

    # Static asset caching
    location ~* \.(?:css|js|svg|png|jpg|jpeg|gif|ico)$ {
        expires 7d;
        add_header Cache-Control "public, max-age=604800, immutable";
    }

    error_page 404 /index.html;
}