Hi I am buidling this mini page.

I need one div which has table to cover another div with a table when a button is clicked
.

My page before clicking link:

![Before](https://i.stack.imgur.com/v8WUT.png)

My page currently after clicking button:
![Page after Link](https://i.stack.imgur.com/4Hga4.png)

AS we can see, both div's table are visible.
I don't want it. I want one div to completely cover another div.

How can I do it?