#:include connected.kv <Login>: BoxLayout id: login_layout orientation: 'vertical' padding: [10,50,10,50] spacing: 50 Label: text: 'Welcome' font_size: 32 BoxLayout: orientation: 'vertical' Label: text: 'Login' font_size: 18 halign: 'left' text_size: root.width-20, 20 TextInput: id: login multiline:False font_size: 28 BoxLayout: orientation: 'vertical' Label: text: 'Password' halign: 'left' font_size: 18 text_size: root.width-20, 20 TextInput: id: password multiline:False password:True font_size: 28 Button: text: 'Connexion' font_size: 24 on_press: root.do_login(login.text, password.text)