fixed dependencies and css, update gallery code

package.json

@@ -40,6 +40,7 @@
     "jquery": "^3.6.3",
     "katex": "^0.16.4",
     "mermaid": "^9.3.0",
+    "packery": "^2.1.2",
     "prettier": "^2.8.3",
     "prettier-plugin-go-template": "^0.0.13",
     "prettier-plugin-tailwindcss": "^0.2.1",
@@ -85,6 +86,10 @@
     {
       "from": "node_modules/jquery/dist/jquery.slim.min.js",
       "to": "assets/lib/jquery/jquery.slim.min.js"
+    },
+    {
+      "from": "node_modules/packery/dist/packery.pkgd.min.js",
+      "to": "assets/lib/packery/packery.pkgd.min.js"
     }
   ],
   "dependencies": {