The menu is displayed behind the text fields, inscriptions. ASP.NET/C#

Question

I have a webpage with a main menu on top. Then on separate pages I have a table with some text fields, etc. In the table. When I hover over a menu to get a drop-down list, it hides behind my text fields, etc. Now he does this on some pages, not on others, and each page basically does the same. So what I lost.

reference

Here is an example of what is happening:

Answer 1

Set the z-index of the menu by lowering the div to 9999:

#menuDropDown { z-index: 9999; } 

Answer 2

I think you are talking about CSS z-index

read this related tutorial

Answer 3

Take a look at my example

Bring item forward / backward