diff --git a/src/app.rs b/src/app.rs
index 85aaac7..e2092f6 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -6,7 +6,7 @@ use crate::{
     ui::Renderer,
 };
 
-struct App {
+pub struct App {
     model: Fitch,
     renderer: Renderer,
     state: State,
@@ -15,7 +15,7 @@ struct App {
 }
 
 impl App {
-    fn new() -> std::io::Result<App> {
+    pub fn new() -> std::io::Result<App> {
         let mut app = App {
             model: Fitch::new(),
             renderer: Renderer::new()?,
@@ -38,7 +38,7 @@ impl App {
         }
     }
 
-    fn listen(&mut self) {
+    pub fn listen(&mut self) {
         loop {
             if self.state == State::Quit {
                 break;
diff --git a/src/main.rs b/src/main.rs
index 8202610..fec5880 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,6 +3,9 @@ mod fitch;
 mod parser;
 mod ui;
 
+use app::App;
+
 fn main() {
-    println!("Hello, world!");
+    let mut app = App::new().unwrap();
+    app.listen();
 }
diff --git a/src/ui.rs b/src/ui.rs
index 06acd78..28a8c1e 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -86,8 +86,8 @@ fn expression_box_area(whole: Rect) -> Rect {
     let temp = Layout::default()
         .direction(Direction::Vertical)
         .constraints([
-            Constraint::Length(whole.height / 2 - 1),
-            Constraint::Length(1),
+            Constraint::Length(whole.height / 2 - 3),
+            Constraint::Length(3),
             Constraint::Length(whole.height / 2),
         ])
         .split(whole)[1];