Add a field for text alignment

themes/opdavies/templates/block.html.twig

@@ -28,7 +28,13 @@
  * @ingroup themeable
  */
 #}
-<div{{ attributes }}>
+{% set text_alignment = content.field_text_alignment['#items'].getValue()|first.value %}
+
+{% set classes = [
+  text_alignment is same as 'centre' ? 'flex justify-center',
+] %}
+
+<div{{ attributes.addClass(classes) }}>
   {{ title_prefix }}
 
   {% if label %}
@@ -38,6 +44,6 @@
   {{ title_suffix }}
 
   {% block content %}
-    {{ content }}
+    {{ content|without('field_text_alignment') }}
   {% endblock %}
 </div>