diff --git a/gnucash/import-export/import-account-matcher.c b/gnucash/import-export/import-account-matcher.c
index bb02064aa6..00001e81d8 100644
--- a/gnucash/import-export/import-account-matcher.c
+++ b/gnucash/import-export/import-account-matcher.c
@@ -457,6 +457,10 @@ Account * gnc_import_select_account(GtkWidget *parent,
         picker->warning = GTK_WIDGET(gtk_builder_get_object (builder, "warning_label"));
         picker->ok_button = GTK_WIDGET(gtk_builder_get_object (builder, "okbutton"));
 
+        // Set the name for this dialog so it can be easily manipulated with css
+        gtk_widget_set_name (GTK_WIDGET(picker->dialog), "gnc-id-import-account-picker");
+        gnc_widget_style_context_add_class (GTK_WIDGET(picker->dialog), "gnc-class-imports");
+
         if (parent)
             gtk_window_set_transient_for (GTK_WINDOW (picker->dialog),
                                           GTK_WINDOW (parent));
diff --git a/gnucash/import-export/import-main-matcher.c b/gnucash/import-export/import-main-matcher.c
index f6a32d7b0c..77ae800a9e 100644
--- a/gnucash/import-export/import-main-matcher.c
+++ b/gnucash/import-export/import-main-matcher.c
@@ -657,6 +657,10 @@ on_matcher_help_clicked (GtkButton *button, gpointer user_data)
     help_dialog = GTK_WIDGET(gtk_builder_get_object (builder, "matcher_help_dialog"));
     gtk_window_set_transient_for (GTK_WINDOW(help_dialog), GTK_WINDOW(info->main_widget));
 
+    // Set the name for this dialog so it can be easily manipulated with css
+    gtk_widget_set_name (GTK_WIDGET(help_dialog), "gnc-id-import-matcher-help");
+    gnc_widget_style_context_add_class (GTK_WIDGET(help_dialog), "gnc-class-imports");
+
     /* Connect the signals */
     gtk_builder_connect_signals_full (builder, gnc_builder_connect_full_func, help_dialog);
 
@@ -1059,6 +1063,10 @@ input_new_fields (GNCImportMainMatcher *info, RowInfo *rowinfo,
 
     dialog = GTK_WIDGET(gtk_builder_get_object (builder, "transaction_edit_dialog"));
 
+    // Set the name for this dialog so it can be easily manipulated with css
+    gtk_widget_set_name (GTK_WIDGET(dialog), "gnc-id-import-matcher-edits");
+    gnc_widget_style_context_add_class (GTK_WIDGET(dialog), "gnc-class-imports");
+
     desc_entry = GTK_WIDGET(gtk_builder_get_object (builder, "desc_entry"));
     memo_entry = GTK_WIDGET(gtk_builder_get_object (builder, "memo_entry"));
     notes_entry = GTK_WIDGET(gtk_builder_get_object (builder, "notes_entry"));
@@ -1718,6 +1726,11 @@ gnc_gen_trans_list_new (GtkWidget *parent,
     box = GTK_WIDGET(gtk_builder_get_object (builder, "transaction_matcher_content"));
     gtk_box_pack_start (GTK_BOX(pbox), box, TRUE, TRUE, 0);
 
+    // Set the name for this dialog so it can be easily manipulated with css
+    gtk_widget_set_name (GTK_WIDGET(info->main_widget), "gnc-id-import-matcher-transactions");
+    gtk_widget_set_name (GTK_WIDGET(box), "gnc-id-import-transaction-content");
+    gnc_widget_style_context_add_class (GTK_WIDGET(info->main_widget), "gnc-class-imports");
+
     /* setup the common parts */
     gnc_gen_trans_common_setup (info, parent, builder, heading,
                                 all_from_same_account, match_date_hardlimit);
@@ -1768,6 +1781,9 @@ gnc_gen_trans_assist_new (GtkWidget *parent,
     g_assert (box != NULL);
     gtk_box_pack_start (GTK_BOX(assistant_page), box, TRUE, TRUE, 6);
 
+    // Set the name for this dialog so it can be easily manipulated with css
+    gtk_widget_set_name (GTK_WIDGET(box), "gnc-id-import-transaction-content");
+
     /* setup the common parts */
     gnc_gen_trans_common_setup (info, parent, builder, heading,
                                 all_from_same_account, match_date_hardlimit);
diff --git a/gnucash/import-export/import-match-picker.c b/gnucash/import-export/import-match-picker.c
index faff221bdd..8b84bb915b 100644
--- a/gnucash/import-export/import-match-picker.c
+++ b/gnucash/import-export/import-match-picker.c
@@ -468,6 +468,10 @@ init_match_picker_gui(GtkWidget *parent, GNCImportMatchPicker * matcher)
     matcher->match_view = (GtkTreeView *)GTK_WIDGET(gtk_builder_get_object (builder, "matched_view"));
     matcher->reconciled_chk = (GtkCheckButton *)GTK_WIDGET(gtk_builder_get_object(builder, "hide_reconciled_check1"));
 
+    // Set the name for this dialog so it can be easily manipulated with css
+    gtk_widget_set_name (GTK_WIDGET(matcher->transaction_matcher), "gnc-id-import-matcher-picker");
+    gnc_widget_style_context_add_class (GTK_WIDGET(matcher->transaction_matcher), "gnc-class-imports");
+
     gtk_window_set_transient_for (GTK_WINDOW (matcher->transaction_matcher), GTK_WINDOW(parent));
 
     gnc_prefs_bind (GNC_PREFS_GROUP, GNC_PREF_DISPLAY_RECONCILED,