Add stylelint-declaration-block-no-ignored-properties (#25284)

Add
[stylelint-declaration-block-no-ignored-properties](https://github.com/kristerkari/stylelint-declaration-block-no-ignored-properties)
and fix discovered issue. There is no visual difference in these markup
code blocks.

.stylelintrc.yaml

@@ -1,5 +1,6 @@
 plugins:
   - stylelint-declaration-strict-value
+  - stylelint-declaration-block-no-ignored-properties
   - stylelint-stylistic
 
 ignoreFiles:
@@ -93,6 +94,7 @@ rules:
   no-unknown-animations: null
   no-unknown-custom-properties: null
   number-max-precision: null
+  plugin/declaration-block-no-ignored-properties: true
   property-allowed-list: null
   property-disallowed-list: null
   property-no-unknown: true

package.json

@@ -75,6 +75,7 @@
     "markdownlint-cli": "0.34.0",
     "postcss-html": "1.5.0",
     "stylelint": "15.7.0",
+    "stylelint-declaration-block-no-ignored-properties": "2.7.0",
     "stylelint-declaration-strict-value": "1.9.2",
     "stylelint-stylistic": "0.4.2",
     "svgo": "3.0.2",

web_src/css/markup/content.css

@@ -481,10 +481,7 @@
 .markup pre code,
 .markup pre tt {
   display: inline;
-  max-width: initial;
   padding: 0;
-  margin: 0;
-  overflow: initial;
   line-height: inherit;
   word-wrap: normal;
   background-color: transparent;