Improve stylelint configuration.

.stylelintrc.json

@@ -13,6 +13,7 @@
     "number-leading-zero": "always",
     "number-no-trailing-zeros": true,
     "number-zero-length-no-unit": true,
+    "number-max-precision": 4,
 
     "string-no-newline": true,
     "string-quotes": "single",
@@ -23,11 +24,16 @@
 
     "value-list-comma-space-after": "always-single-line",
     "value-list-comma-space-before": "never",
+    "value-no-vendor-prefix": true,
 
     "shorthand-property-no-redundant-values": true,
 
     "property-case": "lower",
 
+    "declaration-colon-space-before": "never",
+    "declaration-colon-space-after": "always",
+    "declaration-no-important": true,
+
     "declaration-block-no-duplicate-properties": true,
     "declaration-block-no-ignored-properties": true,
     "declaration-block-trailing-semicolon": "always",
@@ -38,10 +44,12 @@
     "declaration-block-semicolon-newline-after": "always-multi-line",
 
     "block-closing-brace-newline-after": "always",
-    "block-closing-brace-newline-before": "always-multi-line",
+    "block-closing-brace-newline-before": "always",
     "block-no-empty": true,
-    "block-opening-brace-newline-after": "always-multi-line",
-    "block-opening-brace-space-before": "always-multi-line",
+    "block-opening-brace-newline-before": "never",
+    "block-opening-brace-newline-after": "always",
+    "block-opening-brace-space-before": "always",
+    "block-opening-brace-space-after": "never",
 
     "selector-attribute-brackets-space-inside": "never",
     "selector-attribute-operator-space-after": "never",
@@ -51,9 +59,9 @@
     "selector-pseudo-class-case": "lower",
     "selector-pseudo-class-parentheses-space-inside": "never",
     "selector-pseudo-element-case": "lower",
-    "selector-pseudo-element-colon-notation": "double",
+    "selector-pseudo-element-colon-notation": "single",
     "selector-pseudo-element-no-unknown": true,
     "selector-type-case": "lower",
     "selector-no-id": true
   }
-}
+}