Button Nav takes button styling from your bootstrap based theme, so the button colour, size and borders provided by your theme are simply inherited by Button nav. Here the theme is Atomik, so the buttons fit in with any other buttons on an Atomik/Bootstrap site.
In the button design dialog you can choose to override theme colours or corners (or both) with bootstrap defaults. Below you can see some of the variations and sizes this provides.
A button can have an optional Font Awesome icon left or right, and the icon can be enlarged, rotated, flipped and animated.
Buttons can also have an optional background image and text colour. When selected, these override whatever the theme defaults provide.
Buttons can also have behaviours. Any button can be aligned with an edge of the window. Further behaviours depend greatly on what the button is used with.
For example, with an AutoNav dropdown, available behaviours are the dropdown direction and alignment. You can see that in the navigation button to the left and the stack display button to the right.
With lightbox templates and dropdowns for content or stacks, you need to specify the width of the lightbox content. You can see a lightbox in the "Don't Overdoo It" warning at the top of this page.
The examples below all use the Button Nav block and link the button directly to the main Button Nav page
Now some examples of Button Nav templates attached to blocks, so the block opens in a dropdown, lightbox or slide panel.