diff --git a/src/main.rs b/src/main.rs
index 58526be..ddb3097 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -344,61 +344,59 @@ fn draw_title(f: &mut Frame, area: Rect, app: &App) {
 }
 
 fn draw_content(f: &mut Frame, area: Rect, app: &App) {
-    let side_open = app.formula_panel_open || app.category_panel_open || app.view_panel_open;
+    let panel_count = [
+        app.formula_panel_open,
+        app.category_panel_open,
+        app.view_panel_open,
+    ]
+    .iter()
+    .filter(|&&b| b)
+    .count();
 
-    if side_open {
-        let side_w = 32u16;
+    let grid_area = if panel_count == 0 {
+        area
+    } else {
         let chunks = Layout::default()
             .direction(Direction::Horizontal)
-            .constraints([Constraint::Min(40), Constraint::Length(side_w)])
+            .constraints([Constraint::Min(40), Constraint::Length(32)])
             .split(area);
 
-        f.render_widget(
-            GridWidget::new(&app.model, &app.mode, &app.search_query),
-            chunks[0],
-        );
-
-        let side = chunks[1];
-        let panel_count = [
-            app.formula_panel_open,
-            app.category_panel_open,
-            app.view_panel_open,
-        ]
-        .iter()
-        .filter(|&&b| b)
-        .count() as u16;
-        let ph = side.height / panel_count.max(1);
-        let mut y = side.y;
+        let constraints: Vec<Constraint> =
+            vec![Constraint::Ratio(1, panel_count as u32); panel_count];
+        let panel_areas = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints(constraints)
+            .split(chunks[1]);
 
+        let mut slot = 0;
         if app.formula_panel_open {
-            let a = Rect::new(side.x, y, side.width, ph);
             f.render_widget(
                 FormulaPanel::new(&app.model, &app.mode, app.formula_cursor),
-                a,
+                panel_areas[slot],
             );
-            y += ph;
+            slot += 1;
         }
         if app.category_panel_open {
-            let a = Rect::new(side.x, y, side.width, ph);
             f.render_widget(
                 CategoryPanel::new(&app.model, &app.mode, app.cat_panel_cursor),
-                a,
+                panel_areas[slot],
             );
-            y += ph;
+            slot += 1;
         }
         if app.view_panel_open {
-            let a = Rect::new(side.x, y, side.width, ph);
             f.render_widget(
                 ViewPanel::new(&app.model, &app.mode, app.view_panel_cursor),
-                a,
+                panel_areas[slot],
             );
         }
-    } else {
-        f.render_widget(
-            GridWidget::new(&app.model, &app.mode, &app.search_query),
-            area,
-        );
-    }
+
+        chunks[0]
+    };
+
+    f.render_widget(
+        GridWidget::new(&app.model, &app.mode, &app.search_query),
+        grid_area,
+    );
 }
 
 fn draw_tile_bar(f: &mut Frame, area: Rect, app: &App) {