diff --git a/src/main/resources/META-INF/resources/package.json b/src/main/resources/META-INF/resources/package.json
index 6100124..c61cf2f 100644
--- a/src/main/resources/META-INF/resources/package.json
+++ b/src/main/resources/META-INF/resources/package.json
@@ -2,10 +2,24 @@
   "dependencies": {
     "lit-html": "^1.1.2",
     "normalize.css": "^8.0.1",
+    "prefixfree": "^1.0.0",
+    "prismjs": "^1.19.0",
+    "purecss": "^1.0.1",
     "redux": "^4.0.5",
     "sanitize.css": "^11.0.0"
   },
   "devDependencies": {
     "snowpack": "^1.1.0"
+  },
+  "snowpack": {
+    "webDependencies": [
+      "lit-html",
+      "normalize.css/normalize.css",
+      "sanitize.css/{sanitize,forms,formsize,typography,page}.css",
+      "prefixfree",
+      "prismjs",
+      "purecss/build/{base,forms,menus,tables}.css",
+      "redux"
+    ]
   }
 }
diff --git a/src/main/resources/META-INF/resources/yarn.lock b/src/main/resources/META-INF/resources/yarn.lock
index b07eb5e..99e2ff3 100644
--- a/src/main/resources/META-INF/resources/yarn.lock
+++ b/src/main/resources/META-INF/resources/yarn.lock
@@ -892,6 +892,15 @@
   resolved "https://registry.yarnpkg.com/cli-spinners/-/cli-spinners-2.2.0.tgz#e8b988d9206c692302d8ee834e7a85c0144d8f77"
   integrity sha512-tgU3fKwzYjiLEQgPMD9Jt+JjHVL9kW93FiIMX/l7rivvOD4/LL0Mf7gda3+4U2KJBloybwgj5KEoQgGRioMiKQ==
 
+clipboard@^2.0.0:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/clipboard/-/clipboard-2.0.4.tgz#836dafd66cf0fea5d71ce5d5b0bf6e958009112d"
+  integrity sha512-Vw26VSLRpJfBofiVaFb/I8PVfdI1OxKcYShe6fm0sP/DtmiWQNCjhM/okTvdCo0G+lMMm1rMYbk4IK4x1X+kgQ==
+  dependencies:
+    good-listener "^1.2.2"
+    select "^1.1.2"
+    tiny-emitter "^2.0.0"
+
 clone@^1.0.2:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/clone/-/clone-1.0.4.tgz#da309cc263df15994c688ca902179ca3c7cd7c7e"
@@ -984,6 +993,11 @@
   dependencies:
     object-keys "^1.0.12"
 
+delegate@^3.1.2:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/delegate/-/delegate-3.2.0.tgz#b66b71c3158522e8ab5744f720d8ca0c2af59166"
+  integrity sha512-IofjkYBZaZivn0V8nnsMJGBr4jVLxHDheKSW88PyxS5QC4Vo9ZbZVvhzlSxY87fVq3STR6r+4cGepyHkcWOQSw==
+
 dir-compare@^1.8.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/dir-compare/-/dir-compare-1.8.0.tgz#5dbc06682c0492519c733f76f43452414d8167d0"
@@ -1000,11 +1014,6 @@
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.340.tgz#5d4fe78e984d4211194cf5a52e08069543da146f"
   integrity sha512-hRFBAglhcj5iVYH+o8QU0+XId1WGoc0VGowJB1cuJAt3exHGrivZvWeAO5BRgBZqwZtwxjm8a5MQeGoT/Su3ww==
 
-es-module-shims@^0.4.6:
-  version "0.4.6"
-  resolved "https://registry.yarnpkg.com/es-module-shims/-/es-module-shims-0.4.6.tgz#5decb313d52e5c62f6c19ed7e664ee9d66317d8a"
-  integrity sha512-EzVhnLyA/zvmGrAy2RU8m9xpxX7u2yb2by1GZH80SHF6lakG21YAm3Vo56KsLIXaIjT9QabqjYpQU1S5FkM8+Q==
-
 escape-string-regexp@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
@@ -1057,6 +1066,13 @@
   resolved "https://registry.yarnpkg.com/globals/-/globals-11.12.0.tgz#ab8795338868a0babd8525758018c2a7eb95c42e"
   integrity sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==
 
+good-listener@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/good-listener/-/good-listener-1.2.2.tgz#d53b30cdf9313dffb7dc9a0d477096aa6d145c50"
+  integrity sha1-1TswzfkxPf+33JoNR3CWqm0UXFA=
+  dependencies:
+    delegate "^3.1.2"
+
 "graceful-readlink@>= 1.0.0":
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
@@ -1298,11 +1314,28 @@
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
   integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
 
+prefixfree@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/prefixfree/-/prefixfree-1.0.0.tgz#82b0edbbac107f2a3e2dc569d6c3df4035cd7910"
+  integrity sha1-grDtu6wQfyo+LcVp1sPfQDXNeRA=
+
+prismjs@^1.19.0:
+  version "1.19.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.19.0.tgz#713afbd45c3baca4b321569f2df39e17e729d4dc"
+  integrity sha512-IVFtbW9mCWm9eOIaEkNyo2Vl4NnEifis2GQ7/MLRG5TQe6t+4Sj9J5QWI9i3v+SS43uZBlCAOn+zYTVYQcPXJw==
+  optionalDependencies:
+    clipboard "^2.0.0"
+
 private@^0.1.6:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
   integrity sha512-VvivMrbvd2nKkiG38qjULzlc+4Vx4wm/whI9pQD35YrARNnhxeiRktSOhSukRLFNlzg6Br/cJPet5J/u19r/mg==
 
+purecss@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/purecss/-/purecss-1.0.1.tgz#c83d84326a10beb5c3b36d20c0254e946e5568a7"
+  integrity sha512-mTUc5ZzpzafswEhCmTDfSRMMyRFdLYdd+KywMwnBC/MuA/Th7jug2z0Xso4WkxvtxoU/BS9aRb7WnBNyuA7YJQ==
+
 redux@^4.0.5:
   version "4.0.5"
   resolved "https://registry.yarnpkg.com/redux/-/redux-4.0.5.tgz#4db5de5816e17891de8a80c424232d06f051d93f"
@@ -1426,6 +1459,11 @@
   resolved "https://registry.yarnpkg.com/sanitize.css/-/sanitize.css-11.0.0.tgz#29bb394c0543616f31cd8c58fcba8323a60e2ef6"
   integrity sha512-Ox0X2lk0kOGeODJgT9S9HFv0j5Cz89ir9ILylj62/vejHPdMmahmetfocoQwyiAnseeXyDa+KIbO6ZQJe5n2Lg==
 
+select@^1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/select/-/select-1.1.2.tgz#0e7350acdec80b1108528786ec1d4418d11b396d"
+  integrity sha1-DnNQrN7ICxEIUoeG7B1EGNEbOW0=
+
 semver@7.0.0:
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-7.0.0.tgz#5f3ca35761e47e05b206c6daff2cf814f0316b8e"
@@ -1544,6 +1582,11 @@
     source-map "~0.6.1"
     source-map-support "~0.5.12"
 
+tiny-emitter@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/tiny-emitter/-/tiny-emitter-2.1.0.tgz#1d1a56edfc51c43e863cbb5382a72330e3555423"
+  integrity sha512-NB6Dk1A9xgQPMoGqC5CVXn123gWyte215ONT5Pp5a0yt4nlEoO1ZWeCwpncaekPHXO60i47ihFnZPiRPjRMq4Q==
+
 to-fast-properties@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-2.0.0.tgz#dc5e698cbd079265bc73e0377681a4e4e83f616e"