task-2: http://Vovka95.github.io/HW-2/hw-2/task2/ task-3: http://Vovka95.github.io/HW-2/hw-2/task3/ task-4: http://Vovka95.github.io/HW-2/hw-2/task4/ task-5: http://Vovka95.github.io/HW-2/hw-2/task5/