diff --git a/core/profiles/demo_umami/themes/umami/css/classy/components/form.css b/core/profiles/demo_umami/themes/umami/css/classy/components/form.css
index 61af1e1849de51e6798a44cb7ba201cae959bccc..7d8882bed201695f04bb96ed82f504c26818681b 100644
--- a/core/profiles/demo_umami/themes/umami/css/classy/components/form.css
+++ b/core/profiles/demo_umami/themes/umami/css/classy/components/form.css
@@ -93,6 +93,9 @@ abbr.ajax-changed {
 }
 
 /* Inline error messages. */
+.form-item-errors {
+  font-weight: bold;
+}
 .form-item--error-message:before {
   display: inline-block;
   width: 14px;
diff --git a/core/profiles/demo_umami/themes/umami/templates/classy/form/datetime-wrapper.html.twig b/core/profiles/demo_umami/themes/umami/templates/classy/form/datetime-wrapper.html.twig
index 5b52f2daa380f2ef7bb1a0cc15f433c47b2713ff..bdc2f386c2ea83d708e480d5ba4c150aacb3c49c 100644
--- a/core/profiles/demo_umami/themes/umami/templates/classy/form/datetime-wrapper.html.twig
+++ b/core/profiles/demo_umami/themes/umami/templates/classy/form/datetime-wrapper.html.twig
@@ -25,8 +25,8 @@
 {% endif %}
 {{ content }}
 {% if errors %}
-  <div class="form-item--error-message">
-    <strong>{{ errors }}</strong>
+  <div class="form-item--error-message form-item-errors">
+    {{ errors }}
   </div>
 {% endif %}
 {% if description %}
diff --git a/core/profiles/demo_umami/themes/umami/templates/classy/form/details.html.twig b/core/profiles/demo_umami/themes/umami/templates/classy/form/details.html.twig
index c554096da9d785597c6e1e2c317e940002430981..3f6e8ddf05c9e20a5b5c06dc174b70df9c804a06 100644
--- a/core/profiles/demo_umami/themes/umami/templates/classy/form/details.html.twig
+++ b/core/profiles/demo_umami/themes/umami/templates/classy/form/details.html.twig
@@ -27,8 +27,8 @@
   {%- endif -%}
   <div class="details-wrapper">
     {% if errors %}
-      <div class="form-item--error-message">
-        <strong>{{ errors }}</strong>
+      <div class="form-item--error-message form-item-errors">
+        {{ errors }}
       </div>
     {% endif %}
     {%- if description -%}
diff --git a/core/profiles/demo_umami/themes/umami/templates/classy/form/fieldset.html.twig b/core/profiles/demo_umami/themes/umami/templates/classy/form/fieldset.html.twig
index 93b5f54d8964c748ddce16a004bb78f2b21abc5f..3744839b6b55b85357f2846f2d12c3c47ec1435b 100644
--- a/core/profiles/demo_umami/themes/umami/templates/classy/form/fieldset.html.twig
+++ b/core/profiles/demo_umami/themes/umami/templates/classy/form/fieldset.html.twig
@@ -50,8 +50,8 @@
       <div{{ description.attributes.addClass('description') }}>{{ description.content }}</div>
     {% endif %}
     {% if errors %}
-      <div class="form-item--error-message">
-        <strong>{{ errors }}</strong>
+      <div class="form-item--error-message form-item-errors">
+        {{ errors }}
       </div>
     {% endif %}
     {% if prefix %}
diff --git a/core/profiles/demo_umami/themes/umami/templates/classy/form/form-element.html.twig b/core/profiles/demo_umami/themes/umami/templates/classy/form/form-element.html.twig
index 3bde4f711545eb771de7e4df4815bd726b818153..cb512f4582bc7f4d065779f868c4e2651e9238cd 100644
--- a/core/profiles/demo_umami/themes/umami/templates/classy/form/form-element.html.twig
+++ b/core/profiles/demo_umami/themes/umami/templates/classy/form/form-element.html.twig
@@ -83,8 +83,8 @@
     {{ label }}
   {% endif %}
   {% if errors %}
-    <div class="form-item--error-message">
-      <strong>{{ errors }}</strong>
+    <div class="form-item--error-message form-item-errors">
+      {{ errors }}
     </div>
   {% endif %}
   {% if description_display in ['after', 'invisible'] and description.content %}