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Dev TNOPPV5Dev TNOPPV5 

Want to create same page like Configure States and Countries?

Below is the image of Configure States and Countries in pick list but i want to create same page for my application. Is there any idea how to create this?

User-added image

When i would click my custom button, at that time want to show this page.
 
Ravikant kediaRavikant kedia
To create above page you can use bootstrap.

Please take a look on below link.
http://getbootstrap.com/ 

or 

http://getbootstrap.com/css/