diff --git a/core/themes/bartik/css/components/details.css b/core/themes/bartik/css/components/details.css
index 2277e9d..9efd7b3 100644
--- a/core/themes/bartik/css/components/details.css
+++ b/core/themes/bartik/css/components/details.css
@@ -11,7 +11,6 @@
 }
 .details--child-error:not([open]) summary:before {
   content: '';
-  display: inline-block;
   height: 20px;
   width: 14px;
   background: url(../../../../misc/icons/e32700/error.svg) no-repeat center;
diff --git a/core/themes/bartik/css/components/vertical-tabs.component.css b/core/themes/bartik/css/components/vertical-tabs.component.css
index 95cd421..20b06bd 100644
--- a/core/themes/bartik/css/components/vertical-tabs.component.css
+++ b/core/themes/bartik/css/components/vertical-tabs.component.css
@@ -41,7 +41,6 @@
 }
 .vertical-tab__menu-item--child-error:not(.is-selected) .vertical-tabs__menu-item-title:before {
   content: '';
-  display: inline-block;
   height: 20px;
   width: 14px;
   background: url(../../../../misc/icons/e32700/error.svg) no-repeat center;
diff --git a/core/themes/seven/css/components/details.css b/core/themes/seven/css/components/details.css
index 07d33be..4b34c03 100644
--- a/core/themes/seven/css/components/details.css
+++ b/core/themes/seven/css/components/details.css
@@ -8,7 +8,6 @@
 /* Errors */
 .details--child-error:not([open]) summary:before {
   content: '';
-  display: inline-block;
   height: 16px;
   width: 14px;
   background: url(../../../../misc/icons/e32700/error.svg) no-repeat center;
diff --git a/core/themes/seven/css/components/vertical-tabs.css b/core/themes/seven/css/components/vertical-tabs.css
index cefae6d..a3101fa 100644
--- a/core/themes/seven/css/components/vertical-tabs.css
+++ b/core/themes/seven/css/components/vertical-tabs.css
@@ -65,7 +65,6 @@
 }
 .vertical-tab__menu-item--child-error:not(.is-selected) .vertical-tabs__menu-item-title:before {
   content: '';
-  display: inline-block;
   height: 14px;
   width: 14px;
   background: url(../../../../misc/icons/e32700/error.svg) no-repeat center;