12.1 What Is Material Design?
12.2 Toolbar
12.3 Navigation Drawer
12.3.1 DrawerLayout
12.3.2 NavigationView
12.4 FloatingActionButton and Snackbar
12.4.1 FloatingActionButton
12.4.2 Snackbar
12.4.3 CoordinatorLayout
12.5 CardView Layout
12.5.1 MaterialCardView
12.5.2 AppBarLayout
12.6 Pull to Refresh
12.7 Collapsible Toolbar
12.7.1 CollapsingToolbarLayout
12.7.2 Optimizing Using of System Status Bar
12.8 Kotlin Class: Creating Utils
12.8.1 Find Max and Min in N Numbers
12.8.2 Simplifying Use of Toast
12.8.3 Simplifying Use of Snackbar
12.9 Git Time: Advanced Topics in Version Control
12.9.1 Branch
12.9.2 Work with Remote Repo
12.10 Summary and Comment