Some more styles and things.

config/default/editor.editor.basic_html.yml

@@ -13,8 +13,11 @@ editor: ckeditor5
 settings:
   toolbar:
     items:
+      - heading
+      - alignment
       - bold
       - italic
+      - underline
       - '|'
       - link
       - '|'
@@ -22,13 +25,69 @@ settings:
       - numberedList
       - '|'
       - blockQuote
-      - drupalInsertImage
       - '|'
-      - heading
+      - drupalMedia
       - code
+      - codeBlock
       - '|'
       - sourceEditing
   plugins:
+    ckeditor5_alignment:
+      enabled_alignments:
+        - center
+        - justify
+        - left
+        - right
+    ckeditor5_codeBlock:
+      languages:
+        -
+          label: 'Plain text'
+          language: plaintext
+        -
+          label: C
+          language: c
+        -
+          label: 'C#'
+          language: cs
+        -
+          label: C++
+          language: cpp
+        -
+          label: CSS
+          language: css
+        -
+          label: Diff
+          language: diff
+        -
+          label: HTML
+          language: html
+        -
+          label: Java
+          language: java
+        -
+          label: JavaScript
+          language: javascript
+        -
+          label: PHP
+          language: php
+        -
+          label: Python
+          language: python
+        -
+          label: Ruby
+          language: ruby
+        -
+          label: TypeScript
+          language: typescript
+        -
+          label: XML
+          language: xml
+        -
+          label: YAML
+          language: yml
+        -
+          label: JSON
+          language: json
     ckeditor5_heading:
       enabled_headings:
         - heading2
@@ -36,8 +95,6 @@ settings:
         - heading4
         - heading5
         - heading6
-    ckeditor5_imageResize:
-      allow_resize: true
     ckeditor5_list:
       properties:
         reversed: false

config/default/filter.format.basic_html.yml

@@ -35,7 +35,7 @@ filters:
     status: true
     weight: -10
     settings:
-      allowed_html: '<br> <p> <h2 id> <h3 id> <h4 id> <h5 id> <h6 id> <cite> <dl> <dt> <dd> <a hreflang href> <blockquote cite> <ul type> <ol type start> <strong> <em> <code> <li> <img src alt height width data-entity-uuid data-entity-type data-caption data-align> <drupal-media data-entity-type data-entity-uuid alt data-caption data-align>'
+      allowed_html: '<br> <p class="text-align-left text-align-center text-align-right text-align-justify"> <h2 id class="text-align-left text-align-center text-align-right text-align-justify"> <h3 id class="text-align-left text-align-center text-align-right text-align-justify"> <h4 id class="text-align-left text-align-center text-align-right text-align-justify"> <h5 id class="text-align-left text-align-center text-align-right text-align-justify"> <h6 id class="text-align-left text-align-center text-align-right text-align-justify"> <cite> <dl> <dt> <dd> <a hreflang href> <blockquote cite> <ul type> <ol type start> <strong> <em> <u> <code class="language-*"> <pre class="text-align-left text-align-center text-align-right text-align-justify"> <li> <drupal-media data-entity-type data-entity-uuid alt data-caption data-align>'
       filter_html_help: false
       filter_html_nofollow: false
   filter_html_image_secure: