diff --git a/.stylelintrc b/.stylelintrc
index 6791e6bbf2..a6c5b7517c 100644
--- a/.stylelintrc
+++ b/.stylelintrc
@@ -9,18 +9,36 @@
     "block-closing-brace-empty-line-before": "never",
     "block-closing-brace-newline-after": "always",
     "block-closing-brace-newline-before": "always-multi-line",
+    "block-closing-brace-space-before": "always-single-line",
     "block-opening-brace-newline-after": "always-multi-line",
+    "block-opening-brace-space-after": "always-single-line",
+    "block-opening-brace-space-before": "always",
     "color-hex-case": "lower",
+    "declaration-bang-space-after": "never",
+    "declaration-bang-space-before": "always",
     "declaration-block-semicolon-newline-after": "always-multi-line",
+    "declaration-block-semicolon-space-after": "always-single-line",
+    "declaration-block-semicolon-space-before": "never",
     "declaration-colon-newline-after": "always-multi-line",
+    "declaration-colon-space-after": "always-single-line",
+    "declaration-colon-space-before": "never",
     "declaration-empty-line-before": "never",
+    "function-comma-space-after": "always-single-line",
+    "function-comma-space-before": "never",
     "function-max-empty-lines": 0,
     "function-name-case": "lower",
     "function-parentheses-newline-inside": "always-multi-line",
+    "function-parentheses-space-inside": "never-single-line",
     "indentation": 2,
     "max-empty-lines": 1,
+    "media-feature-colon-space-after": "always",
+    "media-feature-colon-space-before": "never",
     "media-feature-name-case": "lower",
+    "media-feature-parentheses-space-inside": "never",
+    "media-feature-range-operator-space-after": "always",
     "media-query-list-comma-newline-after": "always-multi-line",
+    "media-query-list-comma-space-after": "always-single-line",
+    "media-query-list-comma-space-before": "never",
     "no-missing-end-of-source-newline": true,
     "order/properties-alphabetical-order": true,
     "property-case": "lower",
@@ -28,16 +46,28 @@
       except: ["first-nested"],
       ignore: ["after-comment"]
     }],
+    "scss/dollar-variable-colon-space-after": "always",
+    "scss/dollar-variable-colon-space-before": "never",
     "scss/operator-no-newline-after": true,
     "scss/operator-no-newline-before": true,
+    "scss/operator-no-unspaced": true,
+    "selector-attribute-brackets-space-inside": "never",
+    "selector-attribute-operator-space-after": "never",
+    "selector-attribute-operator-space-before": "never",
+    "selector-combinator-space-after": "always",
+    "selector-combinator-space-before": "always",
     "selector-list-comma-newline-after": "always",
+    "selector-list-comma-space-before": "never",
     "selector-max-empty-lines": 0,
     "selector-pseudo-class-case": "lower",
+    "selector-pseudo-class-parentheses-space-inside": "never",
     "selector-pseudo-element-case": "lower",
     "selector-type-case": "lower",
     "string-no-newline": true,
     "unit-case": "lower",
     "value-list-comma-newline-after": "always-multi-line",
+    "value-list-comma-space-after": "always-single-line",
+    "value-list-comma-space-before": "never",
     "value-list-max-empty-lines": 0,
   },
 }
diff --git a/assets/css/src/components/_pagesCustom.scss b/assets/css/src/components/_pagesCustom.scss
index c9d6567f99..87f806d19b 100644
--- a/assets/css/src/components/_pagesCustom.scss
+++ b/assets/css/src/components/_pagesCustom.scss
@@ -43,7 +43,7 @@ Custom styles for MailPoet pages.
     margin-right: 0;
   }
 
-  ul.default-list  {
+  ul.default-list {
     list-style-type: disc;
     margin-left: 40px;
   }
diff --git a/assets/css/src/components/_progressBar.scss b/assets/css/src/components/_progressBar.scss
index 68c3da2246..e4fb8c8da4 100644
--- a/assets/css/src/components/_progressBar.scss
+++ b/assets/css/src/components/_progressBar.scss
@@ -30,7 +30,7 @@
 .mailpoet_progress_complete {
   .mailpoet_progress_bar {
     background-color: hsla(191, 78%, 80%, 1);
-    background-image: linear-gradient(to bottom,  hsla(191, 78%, 80%, 1), hsla(191, 76%, 67%, 1));
+    background-image: linear-gradient(to bottom, hsla(191, 78%, 80%, 1), hsla(191, 76%, 67%, 1));
   }
 }
 
@@ -66,7 +66,7 @@
     width: 100%;
   }
 
-  &:last-of-type{
+  &:last-of-type {
     flex-grow: 0;
     width: 18px;
 
diff --git a/assets/css/src/components/_public.scss b/assets/css/src/components/_public.scss
index 0d2d9feaca..b2767df2a1 100644
--- a/assets/css/src/components/_public.scss
+++ b/assets/css/src/components/_public.scss
@@ -39,7 +39,7 @@
   animation-delay: -0.32s;
 }
 
-.mailpoet_form_loading .mailpoet_bounce2  {
+.mailpoet_form_loading .mailpoet_bounce2 {
   animation-delay: -0.16s;
   margin: 0 7px;
 }
diff --git a/assets/css/src/components/newsletterEditor/contentBlocks/_image.scss b/assets/css/src/components/newsletterEditor/contentBlocks/_image.scss
index d4928ac3d9..0636008638 100644
--- a/assets/css/src/components/newsletterEditor/contentBlocks/_image.scss
+++ b/assets/css/src/components/newsletterEditor/contentBlocks/_image.scss
@@ -10,7 +10,7 @@
     padding: 0;
   }
 
-  .mailpoet_content  {
+  .mailpoet_content {
     margin: auto;
     max-width: 100%;
     min-width: 36px;
diff --git a/assets/css/src/components/newsletterEditor/mixins/_transitions.scss b/assets/css/src/components/newsletterEditor/mixins/_transitions.scss
index 9cd8158fa3..e9c382597f 100644
--- a/assets/css/src/components/newsletterEditor/mixins/_transitions.scss
+++ b/assets/css/src/components/newsletterEditor/mixins/_transitions.scss
@@ -25,7 +25,7 @@
   transition: all 250ms cubic-bezier(0.42, 0, 0.58, 1); /* ease-in-out */
 }
 
-@keyframes fadeIn  {
-  0%  { opacity: 0.3; }
-  100%  { opacity: 1; }
+@keyframes fadeIn {
+  0% { opacity: 0.3; }
+  100% { opacity: 1; }
 }