diff --git a/src/live_effects/parameter/bool.cpp b/src/live_effects/parameter/bool.cpp
index 96d655ab5b3795d89eda0541fee8b54259182267..a47e67233e0456fe90400552fffd813022f09a2d 100644
--- a/src/live_effects/parameter/bool.cpp
+++ b/src/live_effects/parameter/bool.cpp
@@ -82,7 +82,7 @@ BoolParam::param_newWidget()
                                                              false,
                                                              param_effect->getRepr(),
                                                              param_effect->getSPDoc()) );
-
+        checkwdg->get_style_context()->add_class("lpeparam");
         checkwdg->setActive(value);
         checkwdg->setProgrammatically = false;
         checkwdg->set_undo_parameters(_("Change bool parameter"), INKSCAPE_ICON("dialog-path-effects"));
diff --git a/src/live_effects/parameter/colorpicker.cpp b/src/live_effects/parameter/colorpicker.cpp
index 3c8d35032ae619c53b2395f05e7cafdc174727a0..29388d665e02ceac610240d815d62ed4fec35350 100644
--- a/src/live_effects/parameter/colorpicker.cpp
+++ b/src/live_effects/parameter/colorpicker.cpp
@@ -120,6 +120,7 @@ ColorPickerParam::param_newWidget()
                                                         *param_wr,
                                                          param_effect->getRepr(),
                                                          param_effect->getSPDoc() );
+    colorpickerwdg->get_style_context()->add_class("lpeparam");
     SPDocument *document = param_effect->getSPDoc();
     {
         DocumentUndo::ScopedInsensitive _no_undo(document);
diff --git a/src/live_effects/parameter/enum.h b/src/live_effects/parameter/enum.h
index 91af18ccfa9430f258b865fa315bb00a1d9e9412..56c6cb79f2c9e8255e33817f81e2d5449dbb5fa5 100644
--- a/src/live_effects/parameter/enum.h
+++ b/src/live_effects/parameter/enum.h
@@ -48,7 +48,7 @@ public:
         Inkscape::UI::Widget::RegisteredEnum<E> *regenum = Gtk::manage ( 
             new Inkscape::UI::Widget::RegisteredEnum<E>( param_label, param_tooltip,
                        param_key, *enumdataconv, *param_wr, param_effect->getRepr(), param_effect->getSPDoc(), sorted ) );
-
+        regenum->get_style_context()->add_class("lpeparam");
         regenum->set_active_by_id(value);
         regenum->combobox()->setProgrammatically = false;
         regenum->combobox()->signal_changed().connect(sigc::mem_fun (*this, &EnumParam::_on_change_combo));
diff --git a/src/live_effects/parameter/fontbutton.cpp b/src/live_effects/parameter/fontbutton.cpp
index 441f14e6c5d10a9f8c15a7285d3529c82c16e4d9..9804c21e70083657105a0e9bbc9aa52da5646cc0 100644
--- a/src/live_effects/parameter/fontbutton.cpp
+++ b/src/live_effects/parameter/fontbutton.cpp
@@ -76,6 +76,7 @@ FontButtonParam::param_newWidget()
                                                         *param_wr,
                                                         param_effect->getRepr(),
                                                         param_effect->getSPDoc() ) );
+    fontbuttonwdg->get_style_context()->add_class("lpeparam");
     Glib::ustring fontspec = param_getSVGValue();
     fontbuttonwdg->setValue( fontspec);
     fontbuttonwdg->set_undo_parameters(_("Change font button parameter"), INKSCAPE_ICON("dialog-path-effects"));
diff --git a/src/live_effects/parameter/originalpath.cpp b/src/live_effects/parameter/originalpath.cpp
index c4d582dfc7887cd8063a0183120317198b97805c..a3005e180ec1fc339e805a6a85be3036dfde818d 100644
--- a/src/live_effects/parameter/originalpath.cpp
+++ b/src/live_effects/parameter/originalpath.cpp
@@ -45,7 +45,7 @@ Gtk::Widget *
 OriginalPathParam::param_newWidget()
 {
     Gtk::Box *_widget = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL));
-
+    _widget->get_style_context()->add_class("lpeparam");
     { // Label
         Gtk::Label *pLabel = Gtk::manage(new Gtk::Label(param_label));
         _widget->pack_start(*pLabel, true, true);
diff --git a/src/live_effects/parameter/originalsatellite.cpp b/src/live_effects/parameter/originalsatellite.cpp
index 4ddd1c37d73566a53c86e006099db9095f803fd4..d6f07eae930e1040abbcb936bb35d3df9c6405c2 100644
--- a/src/live_effects/parameter/originalsatellite.cpp
+++ b/src/live_effects/parameter/originalsatellite.cpp
@@ -38,7 +38,7 @@ OriginalSatelliteParam::~OriginalSatelliteParam() = default;
 Gtk::Widget *OriginalSatelliteParam::param_newWidget()
 {
     Gtk::Box *_widget = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL));
-
+    _widget->get_style_context()->add_class("lpeparam");
     { // Label
         Gtk::Label *pLabel = Gtk::manage(new Gtk::Label(param_label));
         _widget->pack_start(*pLabel, true, true);
diff --git a/src/live_effects/parameter/parameter.cpp b/src/live_effects/parameter/parameter.cpp
index a3aea93009d77b4a3e825a85d9ac41d279d83044..a695e5eb1cc0b37b4cc5e71f6cb9690a222b5524 100644
--- a/src/live_effects/parameter/parameter.cpp
+++ b/src/live_effects/parameter/parameter.cpp
@@ -336,7 +336,7 @@ Gtk::Widget *ScalarParam::param_newWidget()
     if (widget_is_visible) {
         Inkscape::UI::Widget::RegisteredScalar *rsu = Gtk::manage(new Inkscape::UI::Widget::RegisteredScalar(
             param_label, param_tooltip, param_key, *param_wr, param_effect->getRepr(), param_effect->getSPDoc()));
-
+        rsu->get_style_context()->add_class("lpeparam");
         rsu->setValue(value);
         rsu->setDigits(digits);
         rsu->setIncrements(inc_step, inc_page);
diff --git a/src/live_effects/parameter/path.cpp b/src/live_effects/parameter/path.cpp
index d28b4d36b27a4e0e0189d38a84b0a4d07a9f3d89..80972f14a610d5fbf668737e6ed4004e65e3a3e6 100644
--- a/src/live_effects/parameter/path.cpp
+++ b/src/live_effects/parameter/path.cpp
@@ -259,7 +259,7 @@ Gtk::Widget *
 PathParam::param_newWidget()
 {
     Gtk::Box * _widget = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL));
-
+    _widget->get_style_context()->add_class("lpeparam");
     Gtk::Label* pLabel = Gtk::manage(new Gtk::Label(param_label));
     _widget->pack_start(*pLabel, true, true);
     pLabel->set_tooltip_text(param_tooltip);
diff --git a/src/live_effects/parameter/patharray.cpp b/src/live_effects/parameter/patharray.cpp
index aa7f34a6ddced81d811decdacc588d422cfc7a64..2938ee7458e36249a159aa3152d25e89c540c8ec 100644
--- a/src/live_effects/parameter/patharray.cpp
+++ b/src/live_effects/parameter/patharray.cpp
@@ -219,7 +219,7 @@ Gtk::Widget *PathArrayParam::param_newWidget()
     vbox->pack_end(*hbox, Gtk::PACK_SHRINK);
     
     vbox->show_all_children(true);
-    
+    vbox->get_style_context()->add_class("lpeparam");
     return vbox;
 }
 
diff --git a/src/live_effects/parameter/point.cpp b/src/live_effects/parameter/point.cpp
index dd390dd18c70ef62c4bf0f71eaaa29221807d78e..20c3780179a2b3b9ae4ce1e8ac1f7512b0b3330b 100644
--- a/src/live_effects/parameter/point.cpp
+++ b/src/live_effects/parameter/point.cpp
@@ -166,6 +166,7 @@ PointParam::param_newWidget()
     Gtk::Box * hbox = Gtk::manage( new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL) );
     hbox->pack_start(*pointwdg, true, true);
     hbox->show_all_children();
+    hbox->get_style_context()->add_class("lpeparam");
     return dynamic_cast<Gtk::Widget *> (hbox);
 }
 
diff --git a/src/live_effects/parameter/random.cpp b/src/live_effects/parameter/random.cpp
index 42f50656f4f6108067b9df9b1ef283f1ea989383..f88855cf1e8973cbd374a112b6c3ffc6388f81ea 100644
--- a/src/live_effects/parameter/random.cpp
+++ b/src/live_effects/parameter/random.cpp
@@ -171,7 +171,7 @@ RandomParam::param_newWidget()
     regrandom->signal_button_release_event().connect(sigc::mem_fun (*this, &RandomParam::on_button_release));
 
     regrandom->set_undo_parameters(_("Change random parameter"), INKSCAPE_ICON("dialog-path-effects"));
-
+    regrandom->get_style_context()->add_class("lpeparam");
     return dynamic_cast<Gtk::Widget *> (regrandom);
 }
 
diff --git a/src/live_effects/parameter/satellite.cpp b/src/live_effects/parameter/satellite.cpp
index 8481f642ffaaae9d5347c844fad1641afd946991..b69baa51ede754e9c8bc262ab56f2d7d6cd2bbe0 100644
--- a/src/live_effects/parameter/satellite.cpp
+++ b/src/live_effects/parameter/satellite.cpp
@@ -285,7 +285,7 @@ Gtk::Widget *SatelliteParam::param_newWidget()
     pButton->set_tooltip_text(_("Link to item on clipboard"));
 
     _widget->show_all_children();
-
+    _widget->get_style_context()->add_class("lpeparam");
     return dynamic_cast<Gtk::Widget *>(_widget);
 }
 
diff --git a/src/live_effects/parameter/satellitearray.cpp b/src/live_effects/parameter/satellitearray.cpp
index b678bc171f708a2f97dbe9add0cb8745ad79f805..4c03cf64b45103d15fb32f4fcca8b0e7d2ff5c1b 100644
--- a/src/live_effects/parameter/satellitearray.cpp
+++ b/src/live_effects/parameter/satellitearray.cpp
@@ -390,7 +390,7 @@ Gtk::Widget *SatelliteArrayParam::param_newWidget()
     vbox->pack_end(*hbox, Gtk::PACK_SHRINK);
 
     vbox->show_all_children(true);
-
+    vbox->get_style_context()->add_class("lpeparam");
     return vbox;
 }
 
diff --git a/src/live_effects/parameter/text.cpp b/src/live_effects/parameter/text.cpp
index ea0171dc2ed5b938e66c2570be864b55ae554ef2..42b677e7d3d2045e3e51f9d0322a1a8b4b931131 100644
--- a/src/live_effects/parameter/text.cpp
+++ b/src/live_effects/parameter/text.cpp
@@ -153,6 +153,7 @@ TextParam::param_newWidget()
     text_container->pack_start(*set, false, false, 2);
     Gtk::Widget *return_widg = dynamic_cast<Gtk::Widget *> (text_container);
     return_widg->set_halign(Gtk::ALIGN_END);
+    return_widg->get_style_context()->add_class("lpeparam");
     return return_widg;
 }
 
diff --git a/src/live_effects/parameter/togglebutton.cpp b/src/live_effects/parameter/togglebutton.cpp
index 6b8550730adcfd4e6a918122ab4433c9168a17ce..58f1953e2eeaf2e62276de9e60331485446d3c7e 100644
--- a/src/live_effects/parameter/togglebutton.cpp
+++ b/src/live_effects/parameter/togglebutton.cpp
@@ -141,6 +141,7 @@ ToggleButtonParam::param_newWidget()
    checkwdg->set_undo_parameters(_("Change togglebutton parameter"), INKSCAPE_ICON("dialog-path-effects"));
 
    _toggled_connection = checkwdg->signal_toggled().connect(sigc::mem_fun(*this, &ToggleButtonParam::toggled));
+   checkwdg->get_style_context()->add_class("lpeparam");
    return checkwdg;
 }
 
diff --git a/src/live_effects/parameter/transformedpoint.cpp b/src/live_effects/parameter/transformedpoint.cpp
index 21e090ea8461ace329fd29fda680f2ecdc72fda4..e1753f5bbd7d3588f1287e9294ed80ea153fe02e 100644
--- a/src/live_effects/parameter/transformedpoint.cpp
+++ b/src/live_effects/parameter/transformedpoint.cpp
@@ -123,7 +123,7 @@ TransformedPointParam::param_newWidget()
     Gtk::Box * hbox = Gtk::manage( new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL) );
     hbox->pack_start(*pointwdg, true, true);
     hbox->show_all_children();
-
+    hbox->get_style_context()->add_class("lpeparam");
     return dynamic_cast<Gtk::Widget *> (hbox);
 }
 
diff --git a/src/live_effects/parameter/unit.cpp b/src/live_effects/parameter/unit.cpp
index 7be0fc20b3c6b1fbd1ac5f0d1328f806b453aa2e..cd712af1908e6e215d4c6ee3941a9a38e4356be8 100644
--- a/src/live_effects/parameter/unit.cpp
+++ b/src/live_effects/parameter/unit.cpp
@@ -92,7 +92,7 @@ UnitParam::param_newWidget()
 
     unit_menu->setUnit(unit->abbr);
     unit_menu->set_undo_parameters(_("Change unit parameter"), INKSCAPE_ICON("dialog-path-effects"));
-    
+    unit_menu->get_style_context()->add_class("lpeparam");
     return dynamic_cast<Gtk::Widget *> (unit_menu);
 }
 
diff --git a/src/live_effects/parameter/vector.cpp b/src/live_effects/parameter/vector.cpp
index f421f4d56d1fcddc9df5a9f7acd844fe3fca3062..dc5ec2b2f516a97e60af9e765615ef8ccdd87300 100644
--- a/src/live_effects/parameter/vector.cpp
+++ b/src/live_effects/parameter/vector.cpp
@@ -120,7 +120,7 @@ VectorParam::param_newWidget()
     Gtk::Box * hbox = Gtk::manage( new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL) );
     hbox->pack_start(*pointwdg, true, true);
     hbox->show_all_children();
-
+    hbox->get_style_context()->add_class("lpeparam");
     return dynamic_cast<Gtk::Widget *> (hbox);
 }
 
diff --git a/src/ui/dialog/livepatheffect-add.cpp b/src/ui/dialog/livepatheffect-add.cpp
index 150aada2c669a9d82d5c793cff656f9b99b59575..5105d93ee63100c7cae2e61be8d13a6fb42bc5de 100644
--- a/src/ui/dialog/livepatheffect-add.cpp
+++ b/src/ui/dialog/livepatheffect-add.cpp
@@ -450,7 +450,7 @@ bool LivePathEffectAdd::fav_toggler(GdkEventButton *evt, Glib::RefPtr<Gtk::Build
             sp_remove_fav_dialog(LPEUntranslatedName->get_text());
             LPESelectorEffect->get_parent()->get_style_context()->remove_class("lpefav");
             LPESelectorEffect->get_parent()->get_style_context()->add_class("lpenormal");
-            LPESelectorEffect->get_parent()->get_style_context()->add_class("lpe");
+            LPESelectorEffect->get_parent()->get_style_context()->add_class("lpeparam");
             if (_showfavs) {
                 reload_effect_list();
             }
@@ -462,7 +462,7 @@ bool LivePathEffectAdd::fav_toggler(GdkEventButton *evt, Glib::RefPtr<Gtk::Build
             sp_add_fav_dialog(LPEUntranslatedName->get_text());
             LPESelectorEffect->get_parent()->get_style_context()->add_class("lpefav");
             LPESelectorEffect->get_parent()->get_style_context()->remove_class("lpenormal");
-            LPESelectorEffect->get_parent()->get_style_context()->add_class("lpe");
+            LPESelectorEffect->get_parent()->get_style_context()->add_class("lpeparam");
         }
     }
     return true;
@@ -786,7 +786,7 @@ int LivePathEffectAdd::on_sort(Gtk::FlowBoxChild *child1, Gtk::FlowBoxChild *chi
                         LPESelectorEffectEventFavTop->set_halign(Gtk::ALIGN_END);
                         LPESelectorEffectEventFavTop->set_valign(Gtk::ALIGN_START);
                     }
-                    child1->get_style_context()->add_class("lpe");
+                    child1->get_style_context()->add_class("lpeparam");
                 }
             }
         }
@@ -903,7 +903,7 @@ int LivePathEffectAdd::on_sort(Gtk::FlowBoxChild *child1, Gtk::FlowBoxChild *chi
                         LPESelectorEffectEventFavTop->set_halign(Gtk::ALIGN_END);
                         LPESelectorEffectEventFavTop->set_valign(Gtk::ALIGN_START);
                     }
-                    child2->get_style_context()->add_class("lpe");
+                    child2->get_style_context()->add_class("lpeparam");
                 }
             }
         }
diff --git a/src/ui/dialog/livepatheffect-editor.cpp b/src/ui/dialog/livepatheffect-editor.cpp
index 0771722d58af69c890b81c0a08bd11af0b990199..95d7e1d939b05d66b3407abec27c0041cf805492 100644
--- a/src/ui/dialog/livepatheffect-editor.cpp
+++ b/src/ui/dialog/livepatheffect-editor.cpp
@@ -27,6 +27,7 @@
 #include "object/sp-tspan.h"
 #include "object/sp-item-group.h"
 #include "object/sp-text.h"
+#include "svg/css-ostringstream.h"
 #include "ui/tools/node-tool.h"
 #include "ui/widget/custom-tooltip.h"
 #include "util/optstr.h"
@@ -181,7 +182,7 @@ LivePathEffectEditor::is_appliable(LivePathEffect::EffectType etype, Glib::ustri
     return appliable;
 }
 
-void align(Gtk::Widget* top) {
+void align(Gtk::Widget* top, Glib::RefPtr<Gtk::CssProvider> _lpewidgetsprovider) {
     auto box = dynamic_cast<Gtk::Box*>(top);
     if (!box) return;
 
@@ -210,13 +211,6 @@ void align(Gtk::Widget* top) {
             }
         }
     });
-    // align
-    for_child_n(0, [=](Gtk::Widget* child) {
-        if (auto label = dynamic_cast<Gtk::Label*>(child)) {
-            label->set_size_request(max_width);
-        }
-    });
-
     // column 1 - align spin buttons, if any
     int button_width = 0;
     for_child_n(1, [&](Gtk::Widget* child) {
@@ -229,11 +223,17 @@ void align(Gtk::Widget* top) {
     });
     // set min size for comboboxes, if any
     int combo_size = button_width > 0 ? button_width : 50; // match with spinbuttons, or just min of 50px
-    for_child_n(1, [=](Gtk::Widget* child) {
-        if (auto combo = dynamic_cast<Gtk::ComboBox*>(child)) {
-            combo->set_size_request(combo_size);
-        }
-    });
+    auto screen = Gdk::Screen::get_default();
+    Gtk::StyleContext::remove_provider_for_screen(screen,_lpewidgetsprovider);
+    std::cout << max_width << "AA" << combo_size << std::endl;
+    Inkscape::CSSOStringStream os;
+    os.precision(0);
+    os << ""; //".lpeparam label { min-width: " << max_width << "px; } .lpeparam box label ~ * box label { min-width:1px;} .lpeparam box label ~ * box label + label { /*margin-left:-40px;*/}  .lpeparam combo { min-width: " << combo_size << "px; }";
+    _lpewidgetsprovider->load_from_data(os.str());
+
+    // note: priority set to APP - 1 to make sure styles.css take precedence over generic font-size
+    Gtk::StyleContext::add_provider_for_screen(screen, _lpewidgetsprovider, GTK_STYLE_PROVIDER_PRIORITY_APPLICATION - 1);
+
 }
 
 void
@@ -616,7 +616,7 @@ LivePathEffectEditor::showParams(std::pair<Gtk::Expander *, std::shared_ptr<Inks
             }
             expanderdata.first->add(*effectwidget);
             expanderdata.first->show_all_children();
-            align(effectwidget);
+            align(effectwidget, _lpewidgetsprovider);
             // fixme: add resizing of dialog
             lpe->refresh_widgets = false;
             ensure_size();
diff --git a/src/ui/dialog/livepatheffect-editor.h b/src/ui/dialog/livepatheffect-editor.h
index bc54e255d8a7d1a105da0c27bbf28e19772a0590..858b888746f887a456acb9f6f32faa29d8ccade9 100644
--- a/src/ui/dialog/livepatheffect-editor.h
+++ b/src/ui/dialog/livepatheffect-editor.h
@@ -17,6 +17,7 @@
 #include "ui/widget/completion-popup.h"
 #include "ui/column-menu-builder.h"
 #include <gtkmm/builder.h>
+#include <gtkmm/cssprovider.h>
 
 namespace Inkscape {
 namespace UI {
@@ -102,6 +103,7 @@ private:
     bool _has_mask;
     bool _frezee = false;
     sigc::connection *resize_connection = nullptr;
+    Glib::RefPtr<Gtk::CssProvider> _lpewidgetsprovider = Gtk::CssProvider::create();
 };
 
 } // namespace Dialog