Remove configuration in stylelintrc.yaml & extend shared config instead

.stylelintrc.yaml

@@ -3,77 +3,5 @@ ignoreFiles:
   - build/**/*  
 plugins:
   - stylelint-scss
-# See https://github.com/stylelint/stylelint/blob/master/docs/user-guide/rules.md
-rules:
-  block-closing-brace-newline-after:
-    - always
-    - ignoreAtRules:
-      # Ignore @if … @else in SCSS.
-      - if
-      - else
-  block-no-empty: true
-  block-opening-brace-space-before: always
-  color-hex-case: lower
-  color-hex-length: short
-  color-named: never
-  color-no-invalid-hex: true
-  comment-no-empty: true
-  declaration-bang-space-after: never
-  declaration-bang-space-before: always
-  declaration-block-no-duplicate-properties: true
-  declaration-block-no-redundant-longhand-properties: true
-  declaration-block-single-line-max-declarations: 1
-  declaration-block-trailing-semicolon: always
-  declaration-colon-space-after: always
-  declaration-colon-space-before: never
-  declaration-property-value-blacklist:
-    - /^border/: [none]
-    - severity: error
-  declaration-no-important: true
-  font-family-no-duplicate-names: true
-  function-calc-no-unspaced-operator: true
-  function-comma-space-after: always
-  function-linear-gradient-no-nonstandard-direction: true
-  function-parentheses-space-inside: never
-  function-url-quotes: always
-  indentation:
-    - 4
-    - severity: warning
-  length-zero-no-unit: true
-  max-nesting-depth: 3
-  media-feature-name-no-unknown: true
-  no-empty-source: true
-  no-eol-whitespace: true
-  no-extra-semicolons: true
-  no-missing-end-of-source-newline: true
-  number-no-trailing-zeros: true
-  number-leading-zero: always
-  property-case: lower
-  property-no-unknown: true
-  rule-empty-line-before:
-    - always
-    - except:
-      - after-single-line-comment
-      - first-nested
-  scss/at-import-no-partial-leading-underscore: true
-  scss/at-import-partial-extension-blacklist:
-    - scss
-  scss/at-else-empty-line-before: never
-  selector-no-qualifying-type:
-    - true
-    - ignore:
-      - attribute
-      - class
-  selector-list-comma-newline-after: always
-  selector-max-id: 0
-  selector-pseudo-element-no-unknown: true
-  selector-type-no-unknown: true
-  scss/at-rule-no-unknown: true
-  scss/media-feature-value-dollar-variable: always
-  scss/selector-no-redundant-nesting-selector: true
-  string-no-newline: true
-  string-quotes: single
-  unit-no-unknown: true
-  unit-case: lower
-  value-no-vendor-prefix: true
-  property-no-vendor-prefix: true
+extends:
+  - '@wagtail/stylelint-config-wagtail'