Fragment displaying a grey field I am still a bit new to fragments in android studio but I was wondering if this is usually how fragments are displayed as on the phone. It appear as a grey background above my activity, as shown in this image: https://gyazo.com/9d5569718c5092debfeaab1c631b0046 This is my MainAppActivity code: class MainAppActivity : AppCompatActivity() { private lateinit var appBarConfiguration: AppBarConfiguration...