Choosing the same Rounded Rectangle Tool (U), we have to represent a button on the menu’s panel on the site’s header which needs to be turned over with Free Transform option. The button’s color must be C92130.

The layer’s parameters:
Blending Options>Stroke

Make four copies of the new made button’s layer and change each button’s color:

Select the Ellipse Tool (U) to draw the necessary element for the menu’s buttons:

Apply the next parameters on the layers’ panel:
Fill 0%
Blending Options>Gradient Overlay

Gradient’s parameters:

Blending Options>Stroke