diff --git a/demo-test.html b/demo-test.html
index 776a14e..13773ad 100644
--- a/demo-test.html
+++ b/demo-test.html
@@ -12,7 +12,7 @@
 
   <!-- <link href="bbtreeview.css" rel="stylesheet" /> -->
   <!-- <link href="build/bbtreeview.min.css" rel="stylesheet" /> -->
-  <link href="src/treeview.css" rel="stylesheet" />
+  <!-- <link href="src/treeview.css" rel="stylesheet" /> -->
 
   <script src="dist/treeview.dist.js"></script>
 
diff --git a/package-lock.json b/package-lock.json
index f797b5a..76f5ff3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,10 +1,17 @@
 {
-  "name": "webpack",
+  "name": "LiteRyzJS/Treeview",
+  "version": "0.2.0.248",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
+      "name": "LiteRyzJS/Treeview",
+      "version": "0.2.0.248",
       "devDependencies": {
+        "css-loader": "^7.1.2",
+        "sass": "^1.77.8",
+        "sass-loader": "^16.0.0",
+        "style-loader": "^4.0.0",
         "webpack": "^5.93.0",
         "webpack-cli": "^5.1.4"
       }
@@ -365,6 +372,43 @@
         "ajv": "^6.9.1"
       }
     },
+    "node_modules/anymatch": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.3.tgz",
+      "integrity": "sha512-KMReFUr0B4t+D+OBkjR3KYqvocp2XaSzO55UcB6mgQMd3KbcE+mWTyvVV7D/zsdEbNnV6acZUutkiHQXvTr1Rw==",
+      "dev": true,
+      "dependencies": {
+        "normalize-path": "^3.0.0",
+        "picomatch": "^2.0.4"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/binary-extensions": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.3.0.tgz",
+      "integrity": "sha512-Ceh+7ox5qe7LJuLHoY0feh3pHuUDHAcRUeyL2VYghZwfpkNIy/+8Ocg0a3UuSoYzavmylwuLWQOf3hl0jjMMIw==",
+      "dev": true,
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/braces": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.3.tgz",
+      "integrity": "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==",
+      "dev": true,
+      "dependencies": {
+        "fill-range": "^7.1.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/browserslist": {
       "version": "4.23.3",
       "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.23.3.tgz",
@@ -423,6 +467,30 @@
         }
       ]
     },
+    "node_modules/chokidar": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.6.0.tgz",
+      "integrity": "sha512-7VT13fmjotKpGipCW9JEQAusEPE+Ei8nl6/g4FBAmIm0GOOLMua9NDDo/DWp0ZAxCr3cPq5ZpBqmPAQgDda2Pw==",
+      "dev": true,
+      "dependencies": {
+        "anymatch": "~3.1.2",
+        "braces": "~3.0.2",
+        "glob-parent": "~5.1.2",
+        "is-binary-path": "~2.1.0",
+        "is-glob": "~4.0.1",
+        "normalize-path": "~3.0.0",
+        "readdirp": "~3.6.0"
+      },
+      "engines": {
+        "node": ">= 8.10.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.2"
+      }
+    },
     "node_modules/chrome-trace-event": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/chrome-trace-event/-/chrome-trace-event-1.0.4.tgz",
@@ -472,6 +540,53 @@
         "node": ">= 8"
       }
     },
+    "node_modules/css-loader": {
+      "version": "7.1.2",
+      "resolved": "https://registry.npmjs.org/css-loader/-/css-loader-7.1.2.tgz",
+      "integrity": "sha512-6WvYYn7l/XEGN8Xu2vWFt9nVzrCn39vKyTEFf/ExEyoksJjjSZV/0/35XPlMbpnr6VGhZIUg5yJrL8tGfes/FA==",
+      "dev": true,
+      "dependencies": {
+        "icss-utils": "^5.1.0",
+        "postcss": "^8.4.33",
+        "postcss-modules-extract-imports": "^3.1.0",
+        "postcss-modules-local-by-default": "^4.0.5",
+        "postcss-modules-scope": "^3.2.0",
+        "postcss-modules-values": "^4.0.0",
+        "postcss-value-parser": "^4.2.0",
+        "semver": "^7.5.4"
+      },
+      "engines": {
+        "node": ">= 18.12.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/webpack"
+      },
+      "peerDependencies": {
+        "@rspack/core": "0.x || 1.x",
+        "webpack": "^5.27.0"
+      },
+      "peerDependenciesMeta": {
+        "@rspack/core": {
+          "optional": true
+        },
+        "webpack": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/cssesc": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/cssesc/-/cssesc-3.0.0.tgz",
+      "integrity": "sha512-/Tb/JcjK111nNScGob5MNtsntNM1aCNUDipB/TkwZFhyDrrE47SOx/18wF2bbjgc3ZzCSKW1T5nt5EbFoAz/Vg==",
+      "dev": true,
+      "bin": {
+        "cssesc": "bin/cssesc"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
     "node_modules/electron-to-chromium": {
       "version": "1.5.5",
       "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.5.tgz",
@@ -591,6 +706,18 @@
         "node": ">= 4.9.1"
       }
     },
+    "node_modules/fill-range": {
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
+      "integrity": "sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==",
+      "dev": true,
+      "dependencies": {
+        "to-regex-range": "^5.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/find-up": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/find-up/-/find-up-4.1.0.tgz",
@@ -613,6 +740,20 @@
         "flat": "cli.js"
       }
     },
+    "node_modules/fsevents": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz",
+      "integrity": "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==",
+      "dev": true,
+      "hasInstallScript": true,
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
     "node_modules/function-bind": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.2.tgz",
@@ -622,6 +763,18 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/glob-parent": {
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.2.tgz",
+      "integrity": "sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow==",
+      "dev": true,
+      "dependencies": {
+        "is-glob": "^4.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/glob-to-regexp": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/glob-to-regexp/-/glob-to-regexp-0.4.1.tgz",
@@ -655,6 +808,24 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/icss-utils": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/icss-utils/-/icss-utils-5.1.0.tgz",
+      "integrity": "sha512-soFhflCVWLfRNOPU3iv5Z9VUdT44xFRbzjLsEzSr5AQmgqPMTHdU3PMT1Cf1ssx8fLNJDA1juftYl+PUcv3MqA==",
+      "dev": true,
+      "engines": {
+        "node": "^10 || ^12 || >= 14"
+      },
+      "peerDependencies": {
+        "postcss": "^8.1.0"
+      }
+    },
+    "node_modules/immutable": {
+      "version": "4.3.7",
+      "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.3.7.tgz",
+      "integrity": "sha512-1hqclzwYwjRDFLjcFxOM5AYkkG0rpFPpr1RLPMEuGczoS7YA8gLhy8SWXYRAA/XwfEHpfo3cw5JGioS32fnMRw==",
+      "dev": true
+    },
     "node_modules/import-local": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/import-local/-/import-local-3.2.0.tgz",
@@ -683,6 +854,18 @@
         "node": ">=10.13.0"
       }
     },
+    "node_modules/is-binary-path": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-2.1.0.tgz",
+      "integrity": "sha512-ZMERYes6pDydyuGidse7OsHxtbI7WVeUEozgR/g7rd0xUimYNlvZRE/K2MgZTjWy725IfelLeVcEM97mmtRGXw==",
+      "dev": true,
+      "dependencies": {
+        "binary-extensions": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/is-core-module": {
       "version": "2.15.0",
       "resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.15.0.tgz",
@@ -698,6 +881,36 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/is-extglob": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
+      "integrity": "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/is-glob": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
+      "integrity": "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==",
+      "dev": true,
+      "dependencies": {
+        "is-extglob": "^2.1.1"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/is-number": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
+      "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.12.0"
+      }
+    },
     "node_modules/is-plain-object": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-2.0.4.tgz",
@@ -808,6 +1021,24 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/nanoid": {
+      "version": "3.3.7",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.7.tgz",
+      "integrity": "sha512-eSRppjcPIatRIMC1U6UngP8XFcz8MQWGQdt1MTBQ7NaAmvXDfvNxbvWV3x2y6CdEUciCSsDHDQZbhYaB8QEo2g==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
+        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+      }
+    },
     "node_modules/neo-async": {
       "version": "2.6.2",
       "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz",
@@ -820,6 +1051,15 @@
       "integrity": "sha512-d9VeXT4SJ7ZeOqGX6R5EM022wpL+eWPooLI+5UpWn2jCT1aosUQEhQP214x33Wkwx3JQMvIm+tIoVOdodFS40g==",
       "dev": true
     },
+    "node_modules/normalize-path": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
+      "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/p-limit": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
@@ -886,6 +1126,18 @@
       "integrity": "sha512-anP1Z8qwhkbmu7MFP5iTt+wQKXgwzf7zTyGlcdzabySa9vd0Xt392U0rVmz9poOaBj0uHJKyyo9/upk0HrEQew==",
       "dev": true
     },
+    "node_modules/picomatch": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
+      "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
+      "dev": true,
+      "engines": {
+        "node": ">=8.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
     "node_modules/pkg-dir": {
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/pkg-dir/-/pkg-dir-4.2.0.tgz",
@@ -898,6 +1150,112 @@
         "node": ">=8"
       }
     },
+    "node_modules/postcss": {
+      "version": "8.4.41",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.41.tgz",
+      "integrity": "sha512-TesUflQ0WKZqAvg52PWL6kHgLKP6xB6heTOdoYM0Wt2UHyxNa4K25EZZMgKns3BH1RLVbZCREPpLY0rhnNoHVQ==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/postcss/"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/postcss"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "dependencies": {
+        "nanoid": "^3.3.7",
+        "picocolors": "^1.0.1",
+        "source-map-js": "^1.2.0"
+      },
+      "engines": {
+        "node": "^10 || ^12 || >=14"
+      }
+    },
+    "node_modules/postcss-modules-extract-imports": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/postcss-modules-extract-imports/-/postcss-modules-extract-imports-3.1.0.tgz",
+      "integrity": "sha512-k3kNe0aNFQDAZGbin48pL2VNidTF0w4/eASDsxlyspobzU3wZQLOGj7L9gfRe0Jo9/4uud09DsjFNH7winGv8Q==",
+      "dev": true,
+      "engines": {
+        "node": "^10 || ^12 || >= 14"
+      },
+      "peerDependencies": {
+        "postcss": "^8.1.0"
+      }
+    },
+    "node_modules/postcss-modules-local-by-default": {
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/postcss-modules-local-by-default/-/postcss-modules-local-by-default-4.0.5.tgz",
+      "integrity": "sha512-6MieY7sIfTK0hYfafw1OMEG+2bg8Q1ocHCpoWLqOKj3JXlKu4G7btkmM/B7lFubYkYWmRSPLZi5chid63ZaZYw==",
+      "dev": true,
+      "dependencies": {
+        "icss-utils": "^5.0.0",
+        "postcss-selector-parser": "^6.0.2",
+        "postcss-value-parser": "^4.1.0"
+      },
+      "engines": {
+        "node": "^10 || ^12 || >= 14"
+      },
+      "peerDependencies": {
+        "postcss": "^8.1.0"
+      }
+    },
+    "node_modules/postcss-modules-scope": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/postcss-modules-scope/-/postcss-modules-scope-3.2.0.tgz",
+      "integrity": "sha512-oq+g1ssrsZOsx9M96c5w8laRmvEu9C3adDSjI8oTcbfkrTE8hx/zfyobUoWIxaKPO8bt6S62kxpw5GqypEw1QQ==",
+      "dev": true,
+      "dependencies": {
+        "postcss-selector-parser": "^6.0.4"
+      },
+      "engines": {
+        "node": "^10 || ^12 || >= 14"
+      },
+      "peerDependencies": {
+        "postcss": "^8.1.0"
+      }
+    },
+    "node_modules/postcss-modules-values": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/postcss-modules-values/-/postcss-modules-values-4.0.0.tgz",
+      "integrity": "sha512-RDxHkAiEGI78gS2ofyvCsu7iycRv7oqw5xMWn9iMoR0N/7mf9D50ecQqUo5BZ9Zh2vH4bCUR/ktCqbB9m8vJjQ==",
+      "dev": true,
+      "dependencies": {
+        "icss-utils": "^5.0.0"
+      },
+      "engines": {
+        "node": "^10 || ^12 || >= 14"
+      },
+      "peerDependencies": {
+        "postcss": "^8.1.0"
+      }
+    },
+    "node_modules/postcss-selector-parser": {
+      "version": "6.1.1",
+      "resolved": "https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.1.1.tgz",
+      "integrity": "sha512-b4dlw/9V8A71rLIDsSwVmak9z2DuBUB7CA1/wSdelNEzqsjoSPeADTWNO09lpH49Diy3/JIZ2bSPB1dI3LJCHg==",
+      "dev": true,
+      "dependencies": {
+        "cssesc": "^3.0.0",
+        "util-deprecate": "^1.0.2"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/postcss-value-parser": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz",
+      "integrity": "sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==",
+      "dev": true
+    },
     "node_modules/punycode": {
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.3.1.tgz",
@@ -916,6 +1274,18 @@
         "safe-buffer": "^5.1.0"
       }
     },
+    "node_modules/readdirp": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
+      "integrity": "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==",
+      "dev": true,
+      "dependencies": {
+        "picomatch": "^2.2.1"
+      },
+      "engines": {
+        "node": ">=8.10.0"
+      }
+    },
     "node_modules/rechoir": {
       "version": "0.8.0",
       "resolved": "https://registry.npmjs.org/rechoir/-/rechoir-0.8.0.tgz",
@@ -986,6 +1356,63 @@
         }
       ]
     },
+    "node_modules/sass": {
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+      "integrity": "sha512-b4dlw/9V8A71rLIDsSwVmak9z2DuBUB7CA1/wSdelNEzqsjoSPeADTWNO09lpH49Diy3/JIZ2bSPB1dI3LJCHg==",
+      "dev": true,
+      "requires": {
+        "cssesc": "^3.0.0",
+        "util-deprecate": "^1.0.2"
+      }
+    },
+    "postcss-value-parser": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz",
+      "integrity": "sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==",
+      "dev": true
+    },
     "punycode": {
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.3.1.tgz",
@@ -2064,6 +2758,15 @@
         "safe-buffer": "^5.1.0"
       }
     },
+    "readdirp": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
+      "integrity": "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==",
+      "dev": true,
+      "requires": {
+        "picomatch": "^2.2.1"
+      }
+    },
     "rechoir": {
       "version": "0.8.0",
       "resolved": "https://registry.npmjs.org/rechoir/-/rechoir-0.8.0.tgz",
@@ -2105,6 +2808,26 @@
       "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
       "dev": true
     },
+    "sass": {
+      "version": "1.77.8",
+      "resolved": "https://registry.npmjs.org/sass/-/sass-1.77.8.tgz",
+      "integrity": "sha512-4UHg6prsrycW20fqLGPShtEvo/WyHRVRHwOP4DzkUrObWoWI05QBSfzU71TVB7PFaL104TwNaHpjlWXAZbQiNQ==",
+      "dev": true,
+      "requires": {
+        "chokidar": ">=3.0.0 <4.0.0",
+        "immutable": "^4.0.0",
+        "source-map-js": ">=0.6.2 <2.0.0"
+      }
+    },
+    "sass-loader": {
+      "version": "16.0.0",
+      "resolved": "https://registry.npmjs.org/sass-loader/-/sass-loader-16.0.0.tgz",
+      "integrity": "sha512-n13Z+3rU9A177dk4888czcVFiC8CL9dii4qpXWUg3YIIgZEvi9TCFKjOQcbK0kJM7DJu9VucrZFddvNfYCPwtw==",
+      "dev": true,
+      "requires": {
+        "neo-async": "^2.6.2"
+      }
+    },
     "schema-utils": {
       "version": "3.3.0",
       "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.3.0.tgz",
@@ -2116,6 +2839,12 @@
         "ajv-keywords": "^3.5.2"
       }
     },
+    "semver": {
+      "version": "7.6.3",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.3.tgz",
+      "integrity": "sha512-oVekP1cKtI+CTDvHWYFUcMtsK/00wmAEfyqKfNdARm8u1wNVhSgaX7A8d4UuIlUI5e84iEwOhs7ZPYRmzU9U6A==",
+      "dev": true
+    },
     "serialize-javascript": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-6.0.2.tgz",
@@ -2155,6 +2884,12 @@
       "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
       "dev": true
     },
+    "source-map-js": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.0.tgz",
+      "integrity": "sha512-itJW8lvSA0TXEphiRoawsCksnlf8SyvmFzIhltqAHluXd88pkCd+cXJVHTDwdCr0IzwptSm035IHQktUu1QUMg==",
+      "dev": true
+    },
     "source-map-support": {
       "version": "0.5.21",
       "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.21.tgz",
@@ -2165,6 +2900,13 @@
         "source-map": "^0.6.0"
       }
     },
+    "style-loader": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/style-loader/-/style-loader-4.0.0.tgz",
+      "integrity": "sha512-1V4WqhhZZgjVAVJyt7TdDPZoPBPNHbekX4fWnCJL1yQukhCeZhJySUL+gL9y6sNdN95uEOS83Y55SqHcP7MzLA==",
+      "dev": true,
+      "requires": {}
+    },
     "supports-color": {
       "version": "8.1.1",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-8.1.1.tgz",
@@ -2211,6 +2953,15 @@
         "terser": "^5.26.0"
       }
     },
+    "to-regex-range": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+      "dev": true,
+      "requires": {
+        "is-number": "^7.0.0"
+      }
+    },
     "undici-types": {
       "version": "6.13.0",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.13.0.tgz",
@@ -2236,6 +2987,12 @@
         "punycode": "^2.1.0"
       }
     },
+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
+      "dev": true
+    },
     "watchpack": {
       "version": "2.4.1",
       "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-2.4.1.tgz",
diff --git a/package.json b/package.json
index 050ba95..940b65a 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,10 @@
   "name": "LiteRyzJS/Treeview",
   "version": "0.2.0.248",
   "devDependencies": {
+    "css-loader": "^7.1.2",
+    "sass": "^1.77.8",
+    "sass-loader": "^16.0.0",
+    "style-loader": "^4.0.0",
     "webpack": "^5.93.0",
     "webpack-cli": "^5.1.4"
   },
@@ -9,4 +13,4 @@
     "build": "webpack",
     "watch": "webpack --watch"
   }
-}
\ No newline at end of file
+}
diff --git a/src/treeview.css b/src/treeview.css
deleted file mode 100644
index fb93ce2..0000000
--- a/src/treeview.css
+++ /dev/null
@@ -1,93 +0,0 @@
-ul.bbtreeview {
-  background-image: url("line.png");
-  background-repeat: repeat-y;
-  list-style: none;
-  padding: 0;
-  margin: 0 0 0 8px;
-}
-ul.bbtreeview ul {
-  background-image: url("line.png");
-  background-repeat: repeat-y;
-  list-style: none;
-  margin: 0 0 0 22px;
-  padding: 0;
-}
-ul.bbtreeview li {
-  background-repeat: no-repeat;
-  cursor: default;
-  display: block;
-}
-ul.bbtreeview li div.icon.expand {
-  margin-right: 2px;
-}
-
-ul.bbtreeview .c > ul {
-  display: none;
-}
-ul.bbtreeview div.li {
-  height: 1.2em;
-}
-ul.bbtreeview div.li.highlighted {
-  background-color: rgb(169, 201, 249, 0.7);
-}
-
-
-ul.bbtreeview div.li > span {
-  -webkit-user-select: none;
-  -ms-user-select: none;
-  user-select: none;
-  display: inline-block;
-  height: 1.2em;
-  line-height: 1.2em;
-  overflow: hidden;
-  padding-left: 6px;
-  text-overflow: ellipsis;
-  vertical-align: top;
-  white-space: nowrap;
-}
-
-ul.bbtreeview div.li > span.noicon {
-  padding-left: 0px !important;
-}
-
-
-
-
-ul.bbtreeview div.icon {
-  background-position-x: 0px;
-  background-repeat: no-repeat;
-  display: inline-block;
-  height: 16px;
-  width: 16px;
-}
-
-ul.bbtreeview .c > div > div.icon.expand {
-  background-image: url("sprite.png");
-  background-position-y: -64px;
-}
-
-ul.bbtreeview .e > div > div.icon.expand {
-  background-image: url("sprite.png");
-  background-position-y: -48px;
-}
-
-ul.bbtreeview .nc > div > div.icon.expand {
-  /* background-image: none; */
-  background-image: url("sprite.png");
-  background-position-y: -80px;
-}
-
-ul.bbtreeview .o > div > div.icon.checkbox {
-  background-image: url("sprite.png");
-  background-position-y: -16px;
-}
-
-ul.bbtreeview .x > div > div.icon.checkbox {
-  background-image: url("sprite.png");
-  background-position-y: 0px;
-}
-
-ul.bbtreeview div.icon.folder {
-  background-image: url("sprite.png");
-  background-position-y: -32px;
-}
diff --git a/src/treeview.scss b/src/treeview.scss
new file mode 100644
index 0000000..01b3a94
--- /dev/null
+++ b/src/treeview.scss
@@ -0,0 +1,106 @@
+$highlight-colour: rgb(169, 201, 249, 0.7);
+$icon-sprite: url("sprite.png");
+$line-image: url("line.png");
+$row-height: 1.2em;
+$icon-size: 16px;
+
+
+ul.bbtreeview {
+  background-image: $line-image;
+  background-repeat: repeat-y;
+  list-style: none;
+  padding: 0;
+  margin: 0 0 0 8px;
+
+
+  ul {
+    background-image: $line-image;
+    background-repeat: repeat-y;
+    list-style: none;
+    margin: 0 0 0 22px;
+    padding: 0;
+  }
+
+  li {
+    background-repeat: no-repeat;
+    cursor: default;
+    display: block;
+
+    div.icon.expand {
+      margin-right: 2px;
+    }
+
+  }
+
+  div.li {
+    height: $row-height;
+
+    span {
+      -webkit-user-select: none;
+      -ms-user-select: none;
+      user-select: none;
+      display: inline-block;
+      height: $row-height;
+      line-height: $row-height;
+      overflow: hidden;
+      padding-left: 6px;
+      text-overflow: ellipsis;
+      vertical-align: top;
+      white-space: nowrap;
+    }
+
+    span.noicon {
+      padding-left: 0px !important;
+    }
+
+  }
+
+  div.li.highlighted {
+    background-color:$highlight-colour;
+  }
+
+  div.icon {
+    background-position-x: 0px;
+    background-repeat: no-repeat;
+    display: inline-block;
+    height: $icon-size;
+    width: $icon-size;
+  }
+
+  div.icon.folder {
+    background-image: $icon-sprite;
+    background-position-y: calc(2 * $icon-size * -1);
+  }
+
+
+  .c > ul {
+    display: none;
+  }
+
+  .c > div > div.icon.expand {
+    background-image: $icon-sprite;
+    background-position-y: calc(4 * $icon-size * -1);
+  }
+
+  .e > div > div.icon.expand {
+    background-image: $icon-sprite;
+    background-position-y: calc(3 * $icon-size * -1);
+  }
+
+  .nc > div > div.icon.expand {
+    /* background-image: none; */
+    background-image: $icon-sprite;
+    background-position-y: calc(5 * $icon-size * -1);
+  }
+
+  .o > div > div.icon.checkbox {
+    background-image: $icon-sprite;
+    background-position-y: calc(1 * $icon-size * -1);
+  }
+
+  .x > div > div.icon.checkbox {
+    background-image: $icon-sprite;
+    background-position-y: calc(0 * $icon-size * -1);
+  }
+
+}
\ No newline at end of file
diff --git a/src/treeview/treeview.js b/src/treeview/treeview.js
index 91729db..a91a131 100644
--- a/src/treeview/treeview.js
+++ b/src/treeview/treeview.js
@@ -1,5 +1,7 @@
 import TreeviewNode from './treeviewnode.js';
 
+import '../treeview.scss';
+
 
 class Treeview {
   constructor(options) {
diff --git a/src/treeview/treeviewnode.js b/src/treeview/treeviewnode.js
index d1b36fc..fd83b6b 100644
--- a/src/treeview/treeviewnode.js
+++ b/src/treeview/treeviewnode.js
@@ -291,7 +291,7 @@ class TreeviewNode {
       e.stopPropagation();
       e.preventDefault();
 
-      const myNode = a.Treeview.getNode(e.target);
+      const myNode = a.Treeview.GetTreeNode(e.target);
       if (myNode == null) {
         return;
       }
@@ -304,7 +304,7 @@ class TreeviewNode {
       e.stopPropagation();
       e.preventDefault();
 
-      const myNode = a.Treeview.getNode(e.target);
+      const myNode = a.Treeview.GetTreeNode(e.target);
       if (myNode == null) {
         return;
       }
diff --git a/webpack.config.js b/webpack.config.js
index 2bf1c03..3bc2951 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -44,5 +44,17 @@ module.exports = {
         'process.env.VERSION': JSON.stringify(version)
     }),
     new PrependVersionPlugin()
-  ]
+  ],
+  module: {
+    rules: [
+      {
+        test: /\.scss$/,
+        use: [
+          'style-loader',
+          'css-loader',
+          'sass-loader'
+        ]
+      }
+    ]
+  }
 };
\ No newline at end of file