overflow: auto => It will create a scrollbar - horizontal, vertical or both only if the content in the block
overflow: scroll => It will will insert horizontal and vertical scrollbars. They will become active and shown
only if the content requires it.
overflow: visible => It will cause the content of the block to expand outside of it and be visible at the same time.
overflow: hidden => This forces the block to only show content that fits in the block. Remainng content will
be clipped and not visible to you. There will be no scrollbars.
where in CSS class: