diff --git a/package.json b/package.json
index 14a403d645..98af68f200 100644
--- a/package.json
+++ b/package.json
@@ -141,6 +141,8 @@
     "shell-escape": "^0.2.0",
     "simple-proxy-agent": "^1.1.0",
     "stylelint": "^13.9.0",
+    "stylelint-config-standard": "^20.0.0",
+    "stylelint-scss": "^3.18.0",
     "terser-webpack-plugin": "^2.3.8",
     "typescript": "^4.1.3",
     "webpack": "^4.46.0",
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index 358e2f951b..f5e220b36a 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -1,5 +1,4 @@
 {
-    "Missing indexeddb worker script!": "Missing indexeddb worker script!",
     "Invalid configuration: can only specify one of default_server_config, default_server_name, or default_hs_url.": "Invalid configuration: can only specify one of default_server_config, default_server_name, or default_hs_url.",
     "Invalid configuration: no default server specified.": "Invalid configuration: no default server specified.",
     "Your Element is misconfigured": "Your Element is misconfigured",
diff --git a/yarn.lock b/yarn.lock
index 328996ea5e..f9ff5ae6c6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10834,6 +10834,29 @@ stylehacks@^4.0.0:
     postcss "^7.0.0"
     postcss-selector-parser "^3.0.0"
 
+stylelint-config-recommended@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/stylelint-config-recommended/-/stylelint-config-recommended-3.0.0.tgz#e0e547434016c5539fe2650afd58049a2fd1d657"
+  integrity sha512-F6yTRuc06xr1h5Qw/ykb2LuFynJ2IxkKfCMf+1xqPffkxh0S09Zc902XCffcsw/XMFq/OzQ1w54fLIDtmRNHnQ==
+
+stylelint-config-standard@^20.0.0:
+  version "20.0.0"
+  resolved "https://registry.yarnpkg.com/stylelint-config-standard/-/stylelint-config-standard-20.0.0.tgz#06135090c9e064befee3d594289f50e295b5e20d"
+  integrity sha512-IB2iFdzOTA/zS4jSVav6z+wGtin08qfj+YyExHB3LF9lnouQht//YyB0KZq9gGz5HNPkddHOzcY8HsUey6ZUlA==
+  dependencies:
+    stylelint-config-recommended "^3.0.0"
+
+stylelint-scss@^3.18.0:
+  version "3.19.0"
+  resolved "https://registry.yarnpkg.com/stylelint-scss/-/stylelint-scss-3.19.0.tgz#528006d5a4c5a0f1f4d709b02fd3f626ed66d742"
+  integrity sha512-Ic5bsmpS4wVucOw44doC1Yi9f5qbeVL4wPFiEOaUElgsOuLEN6Ofn/krKI8BeNL2gAn53Zu+IcVV4E345r6rBw==
+  dependencies:
+    lodash "^4.17.15"
+    postcss-media-query-parser "^0.2.3"
+    postcss-resolve-nested-selector "^0.1.1"
+    postcss-selector-parser "^6.0.2"
+    postcss-value-parser "^4.1.0"
+
 stylelint@^13.9.0:
   version "13.9.0"
   resolved "https://registry.yarnpkg.com/stylelint/-/stylelint-13.9.0.tgz#93921ee6e11d4556b9f31131f485dc813b68e32a"