Added selectbox instead of RB

multiapp.py

@@ -2,21 +2,17 @@
 """
 import streamlit as st
 
+
 class MultiApp:
     def __init__(self):
         self.apps = []
 
     def add_app(self, title, func):
-        self.apps.append({
-            "title": title,
-            "function": func
-        })
+        self.apps.append({"title": title, "function": func})
+
+    def run(self):
+        # st.sidebar.header("Navigation")
+        app = st.sidebar.selectbox("", self.apps, format_func=lambda app: app["title"])
 
-    def run(self):        
-        st.sidebar.header('Navigation')
-        app = st.sidebar.radio(
-            '',
-            self.apps,
-            format_func=lambda app: app['title'])
+        app["function"]()
 
-        app['function']()