Resolved Bug 667: Elements > Button > Size not working proper selecting large size change the background icon

[DeepashriDatar]

Description

Added changes for button size property for story Rounded button Added changes for spinner property

ScreenShot

1. Rounded button : small

2. Rounded button : medium

3. Rounded button : large

4. Rounded button : with Spinner

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes