style: bootstrap added

package.json

@@ -28,6 +28,7 @@
     "@angular/forms": "^20.3.0",
     "@angular/platform-browser": "^20.3.0",
     "@angular/router": "^20.3.0",
+    "bootstrap": "^5.3.8",
     "rxjs": "~7.8.0",
     "tslib": "^2.3.0",
     "zone.js": "~0.15.0"
@@ -45,4 +46,4 @@
     "karma-jasmine-html-reporter": "~2.1.0",
     "typescript": "~5.9.2"
   }
-}
+}