[Button] Basic {variant} button should apply :active css the same as non-variant basic button

[JackSteel97]

Steps

On the page: https://semantic-ui.com/elements/button.html#basic (or test case below) Click the 'Add Friend' basic button that is using the classes ui basic button Click any of the Primary, Secondary, etc. basic buttons below using the classes ui primary basic button

Expected Result

The primary button applys :active css similar to the base basic button and indicates the click clearly with background colour change and box-shadow effect.

Actual Result

All of the coloured basic buttons have no effect applied when clicked.

Version

2.4.2

Testcase

https://jsfiddle.net/smxk1grc/