diff --git a/font-end/yarn.lock b/font-end/yarn.lock
index 1ff2aa0..ba18cf8 100644
--- a/font-end/yarn.lock
+++ b/font-end/yarn.lock
@@ -2070,23 +2070,16 @@ browserify-zlib@^0.2.0:
   dependencies:
     pako "~1.0.5"
 
-browserslist@^4.0.0, browserslist@^4.7.3, browserslist@^4.8.2, browserslist@^4.8.3:
-  version "4.8.5"
-  resolved "https://registry.npm.taobao.org/browserslist/download/browserslist-4.8.5.tgz#691af4e327ac877b25e7a3f7ee869c4ef36cdea3"
-  integrity sha1-aRr04yesh3sl56P37oacTvNs3qM=
+browserslist@^4.0.0, browserslist@^4.7.3, browserslist@^4.8.2, browserslist@^4.8.3, browserslist@^4.8.5:
+  version "4.16.6"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.16.6.tgz#d7901277a5a88e554ed305b183ec9b0c08f66fa2"
+  integrity sha512-Wspk/PqO+4W9qp5iUTJsa1B/QrYn1keNCcEP5OvP7WBwT4KaDly0uONYmC6Xa3Z5IqnUgS0KcgLYu1l74x0ZXQ==
   dependencies:
-    caniuse-lite "^1.0.30001022"
-    electron-to-chromium "^1.3.338"
-    node-releases "^1.1.46"
-
-browserslist@^4.8.5:
-  version "4.8.6"
-  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.8.6.tgz#96406f3f5f0755d272e27a66f4163ca821590a7e"
-  integrity sha512-ZHao85gf0eZ0ESxLfCp73GG9O/VTytYDIkIiZDlURppLTI9wErSM/5yAKEq6rcUdxBLjMELmrYUJGg5sxGKMHg==
-  dependencies:
-    caniuse-lite "^1.0.30001023"
-    electron-to-chromium "^1.3.341"
-    node-releases "^1.1.47"
+    caniuse-lite "^1.0.30001219"
+    colorette "^1.2.2"
+    electron-to-chromium "^1.3.723"
+    escalade "^3.1.1"
+    node-releases "^1.1.71"
 
 buffer-equal@0.0.1:
   version "0.0.1"
@@ -2271,15 +2264,10 @@ caniuse-api@^3.0.0:
     lodash.memoize "^4.1.2"
     lodash.uniq "^4.5.0"
 
-caniuse-lite@^1.0.0, caniuse-lite@^1.0.30001020, caniuse-lite@^1.0.30001022:
-  version "1.0.30001023"
-  resolved "https://registry.npm.taobao.org/caniuse-lite/download/caniuse-lite-1.0.30001023.tgz#b82155827f3f5009077bdd2df3d8968bcbcc6fc4"
-  integrity sha1-uCFVgn8/UAkHe90t89iWi8vMb8Q=
-
-caniuse-lite@^1.0.30001023:
-  version "1.0.30001027"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001027.tgz#283e2ef17d94889cc216a22c6f85303d78ca852d"
-  integrity sha512-7xvKeErvXZFtUItTHgNtLgS9RJpVnwBlWX8jSo/BO8VsF6deszemZSkJJJA1KOKrXuzZH4WALpAJdq5EyfgMLg==
+caniuse-lite@^1.0.0, caniuse-lite@^1.0.30001020, caniuse-lite@^1.0.30001219:
+  version "1.0.30001230"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001230.tgz#8135c57459854b2240b57a4a6786044bdc5a9f71"
+  integrity sha512-5yBd5nWCBS+jWKTcHOzXwo5xzcj4ePE/yjtkZyUV1BTUmrBaA9MRGC+e7mxnqXSA90CmCA8L3eKLaSUkt099IQ==
 
 case-sensitive-paths-webpack-plugin@^2.2.0:
   version "2.3.0"
@@ -2563,6 +2551,11 @@ color@^3.0.0:
     color-convert "^1.9.1"
     color-string "^1.5.2"
 
+colorette@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/colorette/-/colorette-1.2.2.tgz#cbcc79d5e99caea2dbf10eb3a26fd8b3e6acfa94"
+  integrity sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==
+
 combined-stream@^1.0.6, combined-stream@~1.0.6:
   version "1.0.8"
   resolved "https://registry.npm.taobao.org/combined-stream/download/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f"
@@ -3364,15 +3357,10 @@ ejs@^2.6.1:
   resolved "https://registry.npm.taobao.org/ejs/download/ejs-2.7.4.tgz?cache=0&sync_timestamp=1574560333790&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fejs%2Fdownload%2Fejs-2.7.4.tgz#48661287573dcc53e366c7a1ae52c3a120eec9ba"
   integrity sha1-SGYSh1c9zFPjZsehrlLDoSDuybo=
 
-electron-to-chromium@^1.3.338:
-  version "1.3.340"
-  resolved "https://registry.npm.taobao.org/electron-to-chromium/download/electron-to-chromium-1.3.340.tgz#5d4fe78e984d4211194cf5a52e08069543da146f"
-  integrity sha1-XU/njphNQhEZTPWlLggGlUPaFG8=
-
-electron-to-chromium@^1.3.341:
-  version "1.3.349"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.349.tgz#663f26a69d348a462df47b4d7ab162a2f29bbcb7"
-  integrity sha512-uEb2zs6EJ6OZIqaMsCSliYVgzE/f7/s1fLWqtvRtHg/v5KBF2xds974fUnyatfxIDgkqzQVwFtam5KExqywx0Q==
+electron-to-chromium@^1.3.723:
+  version "1.3.739"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.739.tgz#f07756aa92cabd5a6eec6f491525a64fe62f98b9"
+  integrity sha512-+LPJVRsN7hGZ9EIUUiWCpO7l4E3qBYHNadazlucBfsXBbccDFNKUBAgzE68FnkWGJPwD/AfKhSzL+G+Iqb8A4A==
 
 elliptic@^6.0.0:
   version "6.5.2"
@@ -3518,6 +3506,11 @@ es6-promise@^3.0.2:
   resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-3.3.1.tgz#a08cdde84ccdbf34d027a1451bc91d4bcd28a613"
   integrity sha1-oIzd6EzNvzTQJ6FFG8kdS80ophM=
 
+escalade@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.1.1.tgz#d8cfdc7000965c5a0174b4a82eaa5c0552742e40"
+  integrity sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==
+
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.npm.taobao.org/escape-html/download/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -6088,19 +6081,10 @@ node-libs-browser@^2.2.1:
     util "^0.11.0"
     vm-browserify "^1.0.1"
 
-node-releases@^1.1.46:
-  version "1.1.47"
-  resolved "https://registry.npm.taobao.org/node-releases/download/node-releases-1.1.47.tgz#c59ef739a1fd7ecbd9f0b7cf5b7871e8a8b591e4"
-  integrity sha1-xZ73OaH9fsvZ8LfPW3hx6Ki1keQ=
-  dependencies:
-    semver "^6.3.0"
-
-node-releases@^1.1.47:
-  version "1.1.49"
-  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.49.tgz#67ba5a3fac2319262675ef864ed56798bb33b93e"
-  integrity sha512-xH8t0LS0disN0mtRCh+eByxFPie+msJUBL/lJDBuap53QGiYPa9joh83K4pCZgWJ+2L4b9h88vCVdXQ60NO2bg==
-  dependencies:
-    semver "^6.3.0"
+node-releases@^1.1.71:
+  version "1.1.72"
+  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.72.tgz#14802ab6b1039a79a0c7d662b610a5bbd76eacbe"
+  integrity sha512-LLUo+PpH3dU6XizX3iVoubUNheF/owjXCZZ5yACDxNnPtgFuludV1ZL3ayK1kVep42Rmm0+R9/Y60NQbZ2bifw==
 
 normalize-package-data@^2.5.0:
   version "2.5.0"