How to edit CSS style of a div using C# in .NET

Question

I\'m trying to grab a div\'s ID in the code behind (C#) and set some css on it. Can I grab it from the DOM or do I have to use some kind of control?

Answer 1

If you do not want to make your control runat server in case you need the ID or simply don't want to add it to the viewstate,

in the back-end:

protected string _css = "modalBackground";