diff --git a/hiro/gtk/application.cpp b/hiro/gtk/application.cpp
index 63f6823a..fe44a383 100755
--- a/hiro/gtk/application.cpp
+++ b/hiro/gtk/application.cpp
@@ -169,7 +169,18 @@ auto pApplication::initialize() -> void {
     widget_class "*.<GtkNotebook>.<GtkHBox>.<GtkButton>" style "HiroTabFrameCloseButton"
   )");
   #elif HIRO_GTK==3
-  //TODO: is there any alternative here with GTK3?
+  GtkCssProvider *provider;
+  GdkScreen *screen;
+
+  provider = gtk_css_provider_new();
+  gtk_css_provider_load_from_data(GTK_CSS_PROVIDER (provider), R"(
+    scale { padding-top: 0; padding-bottom: 0; }
+    entry { min-height: 0; }
+    button { padding: 0; }
+  )", -1, NULL);
+
+  screen = gdk_screen_get_default();
+  gtk_style_context_add_provider_for_screen(screen, GTK_STYLE_PROVIDER (provider), GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
   #endif
 
   pKeyboard::initialize();