tweak demo

Author: emilk

crates/egui_demo_lib/src/demo/panels.rs

@@ -94,7 +94,7 @@ impl crate::View for Panels {
             bottom,
             egui::Panel::bottom("bottom_panel_collapsed")
                 .resizable(true)
-                .exact_size(16.0),
+                .exact_size(18.0),
             egui::Panel::bottom("bottom_panel_expanded")
                 .resizable(true)
                 .max_size(128.0),