Update app.py

app.py

@@ -5,16 +5,17 @@ class YouTubeDownloader:
     @staticmethod
     def run():
         st.title("YouTube Video Downloader")
-        st.write("")
         
         # Navigation Bar
-        nav_option = st.sidebar.radio("Navigation", ["Login", "Sign Up"])
+        nav_option = st.radio("Navigation", ["Login", "Sign Up"])
         if nav_option == "Login":
             # Login button functionality
-            st.sidebar.button("Login")
+            st.button("Login")
         elif nav_option == "Sign Up":
             # Sign Up button functionality
-            st.sidebar.button("Sign Up")
+            st.button("Sign Up")
+
+        st.write("")
         
         url = st.text_input("Enter YouTube URL to download:")
         if url:
@@ -60,7 +61,7 @@ class YouTubeDownloader:
     @classmethod
     def helper_message(cls):
         st.write(
-            "> To save the video to local computer, "
+            "> To save the video to the local computer, "
             "click the vertical ... icon (aka hamburger button) in the bottom-right corner (in the video above) and click download."
         )