my ipad mini's sceen is all black

Okay so i set my alarm app last night when i woke up to my alarms i went to turn it off but i cant do anything.

the sceen is black i tapped the sceen to make the alarm turn off but i couldnt do anything else.

-----Not turn off ( holding the top and siding my finger on the top of the sceen)

-----Siri will talk when i hold down the bottom but she only says that i need to connet to the internet

------and when i click and hold the top bottom and the mean bottom it does nothing.

Can anyone help PLEASE!?!?!?!?!?