Fix fork counter ui bug for safari

## What does this MR do?

Fixes UI bug on safari when fork button has blue arrow

## Screenshots 

![Screenshot_2016-05-19_22.10.21](/uploads/d923d8fc6bc12ee8f7052390bd5d7c51/Screenshot_2016-05-19_22.10.21.png)![Screenshot_2016-05-19_22.09.38](/uploads/130eb8b4a09b2ba5b7c5a83fed543dbf/Screenshot_2016-05-19_22.09.38.png)

See merge request !4221