diff --git a/client/src/activities_view.vala b/client/src/activities_view.vala
index f1b4240..a65d665 100644
--- a/client/src/activities_view.vala
+++ b/client/src/activities_view.vala
@@ -1,38 +1,27 @@
 namespace StudySystemClient {
-	public class ActivitiesView : Gtk.Box {
+	public class ActivitiesView : CardArea {
 		private Client client;
-		private RefreshingIndicator refreshing_indicator;
-		private CardArea card_area;
 
 		public ActivitiesView(Client client)  {
+			base();
+
 			this.client = client;
-			card_area = new CardArea();
-
-			var overlay = new Gtk.Overlay();
-			overlay.hexpand = overlay.vexpand = true;
-			overlay.set_child(card_area);
-			this.append(overlay);
-
-			refreshing_indicator = new RefreshingIndicator(overlay);
-
 			this.map.connect(refresh);
 		}
 
 		private async void refresh() {
-			refreshing_indicator.show();
 			try {
 				var activities = yield client.list_activities();
-				card_area.clear();
+				clear();
 				foreach (var activity in activities) {
 					var card = new ActivityCard(activity);
 					card.session_logged.connect(log_session);
-					card_area.add(card);
+					add(card);
 				}
 			} catch (ClientError e) {
 				stderr.printf("Error refreshing activities: %s\n",
 							  e.message);
 			}
-			refreshing_indicator.hide();
 		}
 
 		private async void log_session(string subject, ActivityType type,
@@ -45,42 +34,4 @@ namespace StudySystemClient {
 			}
 		}
 	}
-
-	private class RefreshingIndicator {
-		private Gtk.Overlay overlay;
-		private Gtk.Frame frame;
-
-		public RefreshingIndicator(Gtk.Overlay overlay) {
-			this.overlay = overlay;
-
-			var label = new Gtk.Label("Refreshing");
-			label.halign = Gtk.Align.START;
-
-			var spinner = new Gtk.Spinner();
-			spinner.start();
-
-			var content = new Gtk.Box(Gtk.Orientation.HORIZONTAL, 6);
-			content.margin_top = content.margin_bottom
-				= content.margin_start = content.margin_end = 12;
-			content.append(label);
-			content.append(spinner);
-
-			frame = new Gtk.Frame(null);
-			frame.halign = Gtk.Align.CENTER;
-			frame.valign = Gtk.Align.START;
-			frame.add_css_class("osd");
-			frame.add_css_class("popdown");
-			frame.set_child(content);
-
-			overlay.add_overlay(frame);
-		}
-
-		public void show() {
-			frame.add_css_class("visible");
-		}
-
-		public void hide() {
-			frame.remove_css_class("visible");
-		}
-	}
 }
diff --git a/client/styles.css b/client/styles.css
index d799846..ec54a54 100644
--- a/client/styles.css
+++ b/client/styles.css
@@ -27,20 +27,3 @@
 	margin-top: -2px;
 	margin-left: 3px;
 }
-
-/*
- * Couldn't find a built-in way to get the common OSD overlay style of
- * rounding the bottom corners but not the top ones, so doing this
- * myself with this CSS rule.
- */
-overlay > frame.osd {
-	border-radius: 0 0 8px 8px;
-}
-
-.popdown {
-	transition: transform 200ms ease-in-out;
-	transform: translateY(-100px);
-}
-.popdown.visible {
-	transform: translateY(0);
-}