Card 101

- Added style for app-header (this includes the global action button) when clicked it needs to display a modal.
- Added the styles for toolbar, including folder navigation and the toolbar actions icons.
- Added some styles for responsive views.

@ghislaineguerin limit the character length or cut off the extra chars with ellipsis? The CSS you have below should do it. If it's not working then you should set a fixed width on the button