fix width and height of cc button

[mugendin]

add as proposed 100% width and height and reorder css properties according to https://css-tricks.com/poll-results-how-do-you-order-your-css-properties/ fixies issue #4547

Description

Bug fix of issue #4547
Add width 100% and height 100%
also change styles order in button.scss as in https://css-tricks.com/poll-results-how-do-you-order-your-css-properties/

Issue:
#4547

Requirements Checklist

• [ 1] Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • [ 1] Change has been verified in an actual browser (Chome, Firefox, IE)
    Tested in Chrome and Firefox
  • Unit Tests updated or fixed
  • Docs/guides updated
  • Example created (starter template on JSBin)
• Reviewed by Two Core Contributors

[gkatsev]

Thanks. Unfortunately, this will cause issues for buttons that aren't in inside of a vjs-control. For example, buttons in the captions settings dialog
.

This has already been fixed by #4548.