diff --git a/core/attributedef.class.inc.php b/core/attributedef.class.inc.php
index 9095be0ac..2b82b99e9 100644
--- a/core/attributedef.class.inc.php
+++ b/core/attributedef.class.inc.php
@@ -4165,7 +4165,7 @@ class AttributeText extends AttributeString
 		{
 			$sValue = self::RenderWikiHtml($sValue, true /* wiki only */);
 
-			return "<div class=\"HTML\" $sStyle>".InlineImage::FixUrls($sValue).'</div>';
+			return "<div class=\"HTML ibo-is-html-content\" $sStyle>".InlineImage::FixUrls($sValue).'</div>';
 		}
 
 	}
diff --git a/css/backoffice/utils/helpers/_misc.scss b/css/backoffice/utils/helpers/_misc.scss
index 25b46bffe..531c3e11b 100644
--- a/css/backoffice/utils/helpers/_misc.scss
+++ b/css/backoffice/utils/helpers/_misc.scss
@@ -142,6 +142,14 @@ body.ibo-has-fullscreen-descendant {
   @extend %ibo-font-code-150;
 }
 
+/*
+ * A single class to handle WYSIWYG generated content, where only HTML tags are available
+ * See https://bulma.io/documentation/elements/content/
+ */
+.ibo-is-html-content {
+  @extend .content;
+}
+
 /***********************************************************************/
 /* Sticky headers                                                      */
 /*                                                                     */
diff --git a/templates/base/components/html/layout.html.twig b/templates/base/components/html/layout.html.twig
index ef12b8056..a5b8f3a48 100644
--- a/templates/base/components/html/layout.html.twig
+++ b/templates/base/components/html/layout.html.twig
@@ -1 +1 @@
-{{ oUIBlock.GetHtml()|raw }}
\ No newline at end of file
+<div class="ibo-is-html-content">{{ oUIBlock.GetHtml()|raw }}</div>
\ No newline at end of file
diff --git a/templates/base/layouts/activity-panel/activity-entry/caselog-entry.html.twig b/templates/base/layouts/activity-panel/activity-entry/caselog-entry.html.twig
index bde9fd3e1..fb80f0aad 100644
--- a/templates/base/layouts/activity-panel/activity-entry/caselog-entry.html.twig
+++ b/templates/base/layouts/activity-panel/activity-entry/caselog-entry.html.twig
@@ -1,4 +1,4 @@
 {% extends 'base/layouts/activity-panel/activity-entry/layout.html.twig' %}
 
-{% block iboActivityEntryExtraClasses %}ibo-caselog-entry ibo-caselog-entry--entry-for-caselog-{{ oUIBlock.GetCaseLogRank() }}{% endblock %}
+{% block iboActivityEntryExtraClasses %}ibo-caselog-entry ibo-caselog-entry--entry-for-caselog-{{ oUIBlock.GetCaseLogRank() }} ibo-is-html-content{% endblock %}
 {% block iboActivityEntryExtraDataAttributes %}data-entry-caselog-attribute-code="{{ oUIBlock.GetAttCode() }}"{% endblock %}
\ No newline at end of file