Why slider is placed on top of the menu using WordPress travelify theme?

Thanks beautiful theme!
But slider is located top of the header. How to fix it?
Please look at my wp.

You haven’t set Featured Images for your Posts.
You have placed your images inside post but haven’t set then as Featured Images. See there is a special widget in Post Edit Screen for this purpose.

Oh, I didn’t know setting featured images for posts.
Thank you verrrrry much!!! :slight_smile: