Blending Options>Stroke

Gradient’s parameters:

Make three copies of the changed button and select again Free Transform option to situate the copies the same way indicated next image:

Using the Rectangle Tool (U), it’s possible to draw above the button a white line, to get the same image from below:

Insert the titles for the site’s menu’s buttons, keeping the demands from the next tables:

home page

the titles for the rest of the menu’s buttons:

The parameters for the home page named layer: Blending Options>Stroke

The parameters for the rest of the titles reserved for the menu’s buttons: Blending Options>Stroke