diff --git a/gnucash/gtkbuilder/assistant-qif-import.glade b/gnucash/gtkbuilder/assistant-qif-import.glade
index 7cc42d30aec..2cadd9a5799 100644
--- a/gnucash/gtkbuilder/assistant-qif-import.glade
+++ b/gnucash/gtkbuilder/assistant-qif-import.glade
@@ -121,7 +121,10 @@ You will have the opportunity to load as many files as you wish, so don't worry
           <object class="GtkLabel" id="load_progress_primary">
             <property name="visible">True</property>
             <property name="can-focus">False</property>
-            <property name="label">&lt;span weight="bold" size="larger"&gt;Primary text&lt;/span&gt;</property>
+            <property name="label">Primary text</property>
+            <style>
+              <class name="gnc-class-title"/>
+            </style>
             <property name="use-markup">True</property>
             <property name="wrap">True</property>
           </object>
@@ -165,7 +168,10 @@ You will have the opportunity to load as many files as you wish, so don't worry
               <object class="GtkLabel" id="load_progress_sub">
                 <property name="visible">True</property>
                 <property name="can-focus">False</property>
-                <property name="label">&lt;span style="italic"&gt;Sub-operation text&lt;/span&gt;</property>
+                <property name="label">Sub-operation text</property>
+                <style>
+                  <class name="gnc-class-emphasis"/>
+                </style>
                 <property name="use-markup">True</property>
                 <property name="wrap">True</property>
               </object>
@@ -1063,7 +1069,10 @@ If you don't see your exchange listed, or none of the available choices are appr
           <object class="GtkLabel" id="convert_progress_primary">
             <property name="visible">True</property>
             <property name="can-focus">False</property>
-            <property name="label">&lt;span weight="bold" size="larger"&gt;Primary text&lt;/span&gt;</property>
+            <property name="label">Primary text</property>
+            <style>
+              <class name="gnc-class-title"/>
+            </style>
             <property name="use-markup">True</property>
             <property name="wrap">True</property>
           </object>
@@ -1107,7 +1116,10 @@ If you don't see your exchange listed, or none of the available choices are appr
               <object class="GtkLabel" id="convert_progress_sub">
                 <property name="visible">True</property>
                 <property name="can-focus">False</property>
-                <property name="label">&lt;span style="italic"&gt;Sub-operation text&lt;/span&gt;</property>
+                <property name="label">Sub-operation text</property>
+                <style>
+                  <class name="gnc-class-emphasis"/>
+                </style>
                 <property name="use-markup">True</property>
                 <property name="wrap">True</property>
               </object>
diff --git a/gnucash/gtkbuilder/dialog-new-user.glade b/gnucash/gtkbuilder/dialog-new-user.glade
index 73d39d165ca..6223b34e2ae 100644
--- a/gnucash/gtkbuilder/dialog-new-user.glade
+++ b/gnucash/gtkbuilder/dialog-new-user.glade
@@ -84,7 +84,10 @@
               <object class="GtkLabel" id="label">
                 <property name="visible">True</property>
                 <property name="can-focus">False</property>
-                <property name="label" translatable="yes">&lt;span weight="bold" size="larger"&gt;Display Welcome Dialog Again?&lt;/span&gt;</property>
+                <property name="label" translatable="yes">Display Welcome Dialog Again?</property>
+                <style>
+                  <class name="gnc-class-title"/>
+                </style>
                 <property name="use-markup">True</property>
               </object>
               <packing>
@@ -207,7 +210,10 @@
               <object class="GtkLabel" id="label2">
                 <property name="visible">True</property>
                 <property name="can-focus">False</property>
-                <property name="label" translatable="yes">&lt;span size="larger" weight="bold"&gt;Welcome to GnuCash!&lt;/span&gt;</property>
+                <property name="label" translatable="yes">Welcome to GnuCash!</property>
+                <style>
+                  <class name="gnc-class-title"/>
+                </style>
                 <property name="use-markup">True</property>
               </object>
               <packing>
diff --git a/gnucash/gtkbuilder/dialog-progress.glade b/gnucash/gtkbuilder/dialog-progress.glade
index 30a9900e7fe..63b10befdff 100644
--- a/gnucash/gtkbuilder/dialog-progress.glade
+++ b/gnucash/gtkbuilder/dialog-progress.glade
@@ -24,7 +24,10 @@
           <object class="GtkLabel" id="primary_label">
             <property name="visible">True</property>
             <property name="can-focus">False</property>
-            <property name="label">&lt;span weight="bold" size="larger"&gt;Primary text&lt;/span&gt;</property>
+            <property name="label">Primary text</property>
+            <style>
+              <class name="gnc-class-title"/>
+            </style>
             <property name="use-markup">True</property>
             <property name="wrap">True</property>
           </object>
@@ -68,7 +71,10 @@
               <object class="GtkLabel" id="sub_label">
                 <property name="visible">True</property>
                 <property name="can-focus">False</property>
-                <property name="label">&lt;span style="italic"&gt;Sub-operation text&lt;/span&gt;</property>
+                <property name="label">Sub-operation text</property>
+                <style>
+                  <class name="gnc-class-emphasis"/>
+                </style>
                 <property name="use-markup">True</property>
                 <property name="wrap">True</property>
               </object>