Redmine5.0: Header style does not apply on mobile

[Khsmty]

In Redmine5.0 environment, styles are not applied to the mobile version of the header.

[carlittoer]

Hello,

Is PurpleMine2 going to support Redmine 5.x ?

[msundin]

Not only on mobile. This also happens in a browser on an ordinary laptop/desktop when the browser window is small enough (responsive design) to make the "hamburger" menu appear on the right hand side at the top.