diff --git a/package.json b/package.json
index 4eb3094e..ce5a0154 100644
--- a/package.json
+++ b/package.json
@@ -98,7 +98,7 @@
     "nyc": "12.0.2",
     "sinon": "6.1.4",
     "socket.io-client": "2.1.1",
-    "stylelint": "9.3.0",
+    "stylelint": "9.4.0",
     "stylelint-config-standard": "18.2.0",
     "textcomplete": "0.17.1",
     "undate": "0.3.0",
diff --git a/yarn.lock b/yarn.lock
index 27b0230c..671b5a60 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -570,15 +570,15 @@ autoprefixer@^6.3.1:
     postcss "^5.2.16"
     postcss-value-parser "^3.2.3"
 
-autoprefixer@^8.0.0:
-  version "8.5.1"
-  resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-8.5.1.tgz#45b0271b0e634af66613d5a4f99d96f3dcd94474"
+autoprefixer@^9.0.0:
+  version "9.0.1"
+  resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-9.0.1.tgz#b5b74aba3fa60b4f1403729e46a6a1246f16818f"
   dependencies:
-    browserslist "^3.2.8"
-    caniuse-lite "^1.0.30000846"
+    browserslist "^4.0.1"
+    caniuse-lite "^1.0.30000865"
     normalize-range "^0.1.2"
     num2fraction "^1.2.2"
-    postcss "^6.0.22"
+    postcss "^7.0.1"
     postcss-value-parser "^3.2.3"
 
 aws-sign2@~0.7.0:
@@ -1268,13 +1268,21 @@ browserslist@^1.3.6, browserslist@^1.5.2, browserslist@^1.7.6:
     caniuse-db "^1.0.30000639"
     electron-to-chromium "^1.2.7"
 
-browserslist@^3.2.6, browserslist@^3.2.8:
+browserslist@^3.2.6:
   version "3.2.8"
   resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-3.2.8.tgz#b0005361d6471f0f5952797a76fc985f1f978fc6"
   dependencies:
     caniuse-lite "^1.0.30000844"
     electron-to-chromium "^1.3.47"
 
+browserslist@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.0.1.tgz#61c05ce2a5843c7d96166408bc23d58b5416e818"
+  dependencies:
+    caniuse-lite "^1.0.30000865"
+    electron-to-chromium "^1.3.52"
+    node-releases "^1.0.0-alpha.10"
+
 buffer-equal-constant-time@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz#f8e71132f7ffe6e01a5c9697a4c6f3e48d5cc819"
@@ -1428,10 +1436,14 @@ caniuse-db@^1.0.30000529, caniuse-db@^1.0.30000634, caniuse-db@^1.0.30000639:
   version "1.0.30000846"
   resolved "https://registry.yarnpkg.com/caniuse-db/-/caniuse-db-1.0.30000846.tgz#d9c86f914738db4da098eeded997413c44561bd2"
 
-caniuse-lite@^1.0.30000844, caniuse-lite@^1.0.30000846:
+caniuse-lite@^1.0.30000844:
   version "1.0.30000846"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000846.tgz#2092911eecad71a89dae1faa62bcc202fde7f959"
 
+caniuse-lite@^1.0.30000865:
+  version "1.0.30000865"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000865.tgz#70026616e8afe6e1442f8bb4e1092987d81a2f25"
+
 caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
@@ -2319,6 +2331,10 @@ electron-to-chromium@^1.2.7, electron-to-chromium@^1.3.47:
   version "1.3.48"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.48.tgz#d3b0d8593814044e092ece2108fc3ac9aea4b900"
 
+electron-to-chromium@^1.3.52:
+  version "1.3.52"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.52.tgz#d2d9f1270ba4a3b967b831c40ef71fb4d9ab5ce0"
+
 elliptic@^6.0.0:
   version "6.4.0"
   resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.0.tgz#cac9af8762c85836187003c8dfe193e5e2eae5df"
@@ -3524,11 +3540,11 @@ ignore-walk@^3.0.1:
   dependencies:
     minimatch "^3.0.4"
 
-ignore@^3.3.3, ignore@^3.3.5:
+ignore@^3.3.5:
   version "3.3.8"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.8.tgz#3f8e9c35d38708a3a7e0e9abb6c73e7ee7707b2b"
 
-ignore@^4.0.2:
+ignore@^4.0.0, ignore@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-4.0.2.tgz#0a8dd228947ec78c2d7f736b1642a9f7317c1905"
 
@@ -4985,6 +5001,12 @@ node-pre-gyp@^0.10.3:
     semver "^5.3.0"
     tar "^4"
 
+node-releases@^1.0.0-alpha.10:
+  version "1.0.0-alpha.10"
+  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.0.0-alpha.10.tgz#61c8d5f9b5b2e05d84eba941d05b6f5202f68a2a"
+  dependencies:
+    semver "^5.3.0"
+
 nodent-runtime@^3.0.3:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/nodent-runtime/-/nodent-runtime-3.2.1.tgz#9e2755d85e39f764288f0d4752ebcfe3e541e00e"
@@ -5589,9 +5611,9 @@ postcss-filter-plugins@^2.0.0:
   dependencies:
     postcss "^5.0.4"
 
-postcss-html@^0.28.0:
-  version "0.28.0"
-  resolved "https://registry.yarnpkg.com/postcss-html/-/postcss-html-0.28.0.tgz#3dd0f5b5d7f886b8181bf844396d43a7898162cb"
+postcss-html@^0.31.0:
+  version "0.31.0"
+  resolved "https://registry.yarnpkg.com/postcss-html/-/postcss-html-0.31.0.tgz#ea6ae2e95df60a03032e9ab5aba72143d8ca0325"
   dependencies:
     htmlparser2 "^3.9.2"
 
@@ -5601,9 +5623,9 @@ postcss-less@^2.0.0:
   dependencies:
     postcss "^5.2.16"
 
-postcss-markdown@^0.28.0:
-  version "0.28.0"
-  resolved "https://registry.yarnpkg.com/postcss-markdown/-/postcss-markdown-0.28.0.tgz#99d1c4e74967af9e9c98acb2e2b66df4b3c6ed86"
+postcss-markdown@^0.31.0:
+  version "0.31.0"
+  resolved "https://registry.yarnpkg.com/postcss-markdown/-/postcss-markdown-0.31.0.tgz#e4c699ad34b14a29ad5d47132bb1b3100b60ef75"
   dependencies:
     remark "^9.0.0"
     unist-util-find-all-after "^1.0.2"
@@ -5756,11 +5778,11 @@ postcss-resolve-nested-selector@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/postcss-resolve-nested-selector/-/postcss-resolve-nested-selector-0.1.1.tgz#29ccbc7c37dedfac304e9fff0bf1596b3f6a0e4e"
 
-postcss-safe-parser@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/postcss-safe-parser/-/postcss-safe-parser-3.0.1.tgz#b753eff6c7c0aea5e8375fbe4cde8bf9063ff142"
+postcss-safe-parser@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-safe-parser/-/postcss-safe-parser-4.0.1.tgz#8756d9e4c36fdce2c72b091bbc8ca176ab1fcdea"
   dependencies:
-    postcss "^6.0.6"
+    postcss "^7.0.0"
 
 postcss-sass@^0.3.0:
   version "0.3.2"
@@ -5769,11 +5791,11 @@ postcss-sass@^0.3.0:
     gonzales-pe "4.2.3"
     postcss "6.0.22"
 
-postcss-scss@^1.0.2:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/postcss-scss/-/postcss-scss-1.0.5.tgz#40a10cfd03766accf0a3cf8e65a8af887b2bf6c4"
+postcss-scss@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-scss/-/postcss-scss-2.0.0.tgz#248b0a28af77ea7b32b1011aba0f738bda27dea1"
   dependencies:
-    postcss "^6.0.21"
+    postcss "^7.0.0"
 
 postcss-selector-parser@^2.0.0, postcss-selector-parser@^2.2.2:
   version "2.2.3"
@@ -5791,6 +5813,10 @@ postcss-selector-parser@^3.1.0:
     indexes-of "^1.0.1"
     uniq "^1.0.1"
 
+postcss-styled@^0.31.0:
+  version "0.31.0"
+  resolved "https://registry.yarnpkg.com/postcss-styled/-/postcss-styled-0.31.0.tgz#ab532a2b3c469dfcca306a7623c4d4a98bb077d5"
+
 postcss-svgo@^2.1.1:
   version "2.1.6"
   resolved "https://registry.yarnpkg.com/postcss-svgo/-/postcss-svgo-2.1.6.tgz#b6df18aa613b666e133f08adb5219c2684ac108d"
@@ -5800,9 +5826,9 @@ postcss-svgo@^2.1.1:
     postcss-value-parser "^3.2.3"
     svgo "^0.7.0"
 
-postcss-syntax@^0.28.0:
-  version "0.28.0"
-  resolved "https://registry.yarnpkg.com/postcss-syntax/-/postcss-syntax-0.28.0.tgz#e17572a7dcf5388f0c9b68232d2dad48fa7f0b12"
+postcss-syntax@^0.31.0:
+  version "0.31.0"
+  resolved "https://registry.yarnpkg.com/postcss-syntax/-/postcss-syntax-0.31.0.tgz#13d955c705d339595d10a19efa4a1bee82dfb78f"
 
 postcss-unique-selectors@^2.0.2:
   version "2.0.2"
@@ -5824,7 +5850,7 @@ postcss-zindex@^2.0.1:
     postcss "^5.0.4"
     uniqs "^2.0.0"
 
-postcss@6.0.22, postcss@^6.0.1, postcss@^6.0.14, postcss@^6.0.16, postcss@^6.0.21, postcss@^6.0.22, postcss@^6.0.6, postcss@^6.0.8:
+postcss@6.0.22, postcss@^6.0.1, postcss@^6.0.14, postcss@^6.0.8:
   version "6.0.22"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-6.0.22.tgz#e23b78314905c3b90cbd61702121e7a78848f2a3"
   dependencies:
@@ -5841,6 +5867,14 @@ postcss@^5.0.10, postcss@^5.0.11, postcss@^5.0.12, postcss@^5.0.13, postcss@^5.0
     source-map "^0.5.6"
     supports-color "^3.2.3"
 
+postcss@^7.0.0, postcss@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.1.tgz#db20ca4fc90aa56809674eea75864148c66b67fa"
+  dependencies:
+    chalk "^2.4.1"
+    source-map "^0.6.1"
+    supports-color "^5.4.0"
+
 precond@0.2:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/precond/-/precond-0.2.3.tgz#aa9591bcaa24923f1e0f4849d240f47efc1075ac"
@@ -6812,9 +6846,9 @@ spdy@3.4.7, spdy@^3.4.1:
     select-hose "^2.0.0"
     spdy-transport "^2.0.18"
 
-specificity@^0.3.1:
-  version "0.3.2"
-  resolved "https://registry.yarnpkg.com/specificity/-/specificity-0.3.2.tgz#99e6511eceef0f8d9b57924937aac2cb13d13c42"
+specificity@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/specificity/-/specificity-0.4.0.tgz#301b1ab5455987c37d6d94f8c956ef9d9fb48c1d"
 
 split-string@^3.0.1, split-string@^3.0.2:
   version "3.1.0"
@@ -7032,11 +7066,11 @@ stylelint-config-standard@18.2.0:
   dependencies:
     stylelint-config-recommended "^2.1.0"
 
-stylelint@9.3.0:
-  version "9.3.0"
-  resolved "https://registry.yarnpkg.com/stylelint/-/stylelint-9.3.0.tgz#fe176e4e421ac10eac1a6b6d9f28e908eb58c5db"
+stylelint@9.4.0:
+  version "9.4.0"
+  resolved "https://registry.yarnpkg.com/stylelint/-/stylelint-9.4.0.tgz#2f2b82ae9db53a06735ae0724f41b134fdb84a10"
   dependencies:
-    autoprefixer "^8.0.0"
+    autoprefixer "^9.0.0"
     balanced-match "^1.0.0"
     chalk "^2.4.1"
     cosmiconfig "^5.0.0"
@@ -7047,7 +7081,7 @@ stylelint@9.3.0:
     globby "^8.0.0"
     globjoin "^0.1.4"
     html-tags "^2.0.0"
-    ignore "^3.3.3"
+    ignore "^4.0.0"
     import-lazy "^3.1.0"
     imurmurhash "^0.1.4"
     known-css-properties "^0.6.0"
@@ -7058,22 +7092,23 @@ stylelint@9.3.0:
     micromatch "^2.3.11"
     normalize-selector "^0.2.0"
     pify "^3.0.0"
-    postcss "^6.0.16"
-    postcss-html "^0.28.0"
+    postcss "^7.0.0"
+    postcss-html "^0.31.0"
     postcss-less "^2.0.0"
-    postcss-markdown "^0.28.0"
+    postcss-markdown "^0.31.0"
     postcss-media-query-parser "^0.2.3"
     postcss-reporter "^5.0.0"
     postcss-resolve-nested-selector "^0.1.1"
-    postcss-safe-parser "^3.0.1"
+    postcss-safe-parser "^4.0.0"
     postcss-sass "^0.3.0"
-    postcss-scss "^1.0.2"
+    postcss-scss "^2.0.0"
     postcss-selector-parser "^3.1.0"
-    postcss-syntax "^0.28.0"
+    postcss-styled "^0.31.0"
+    postcss-syntax "^0.31.0"
     postcss-value-parser "^3.3.0"
     resolve-from "^4.0.0"
     signal-exit "^3.0.2"
-    specificity "^0.3.1"
+    specificity "^0.4.0"
     string-width "^2.1.0"
     style-search "^0.1.0"
     sugarss "^1.0.0"