title: How to change button size in kivy?
body: <p>I am writing a program in Python using kivy, and I am unable to change the size of the buttons that transition back and forth between two screens</p>
  
  <p>I can't think of any reason why I'm unable to change its size with something like "size: 75, 50" is it because the class is inherited from Screen instead of Button?</p>
  
  <p>Python File:</p>
  
  <pre><code>import kivy
  from kivy.app import App
  kivy.require("1.10.1")
  from kivy.uix.label import Label
  from kivy.uix.widget import Widget
  from kivy.uix.button import Button
  from kivy.uix.boxlayout import BoxLayout
  from kivy.lang import Builder
  from kivy.uix.screenmanager import Screen
  from kivy.uix.screenmanager import ScreenManager
  
  class ScreenRoot(Screen):   
      pass
  
  class OtherScreen(Screen):   
      pass
  
  class ScreenUpkeep(ScreenManager):    
      pass
  
  view = Builder.load_file("main.kv")
  
      class MainApp(App):
          def build(self):
              return view
  
  if __name__ == "__main__":
      MainApp().run()
  </code></pre>
  
  <p>Corresponding .kv file:</p>
  
  <pre><code>ScreenUpkeep:
      ScreenRoot:
      OtherScreen:    
  
  &lt;ScreenRoot&gt;:
      name: "rootmain"
      Button:
          text: "Next Screen"
          font_size: 40
          on_release: app.root.current = "other"
          size: 75, 50
  &lt;OtherScreen&gt;:
      name: "other"
      Button:
          text: "Return"
          font_size: 40
              on_release: app.root.current = "rootmain"
  </code></pre>
  
  <p>I just want to be able to change the size of the button to be able to include more things like text and pictures on each screen.</p>