Can't use it properly on table

[AtousaDarabi]

I wanted to use it on a table when overflows.
As it is just just on block displays works, so I added css to table tag:
display: block,
Width: 100%

But when the columns in table are few my columns all come left and don't fill all width(As it is displayed block not table).
How can I use it with display table?

[donmbelembe]

Can you share a snippet ?