Make a copy of the recently created layer and select again the
Free Transform option to move the copy to the right side and lift it up a little the way it is demonstrated on the picture.


Using the
Rounded Rectangle Tool (U), represent the lowest layer reserved for the buttons’ panel on the site’s header’s menu, colored in
#010101

The layer’s parameters:
Blending Options>Outer Glow

Make a copy of the new made layer and select the
Free Transform option to make it smaller a little and apply for this copy different parameters: