The win10 tray style is changed to win7.

Hello, unfortunately your query is unclear.

The title suggests you have Windows 10, and a tray style that is Win 7's and don't want it. However, your screenshot suggests what you actually dislike is Win 10's tray style, and want Win 7's.

You can simply drag icons from the notification area to your taskbar, and v. versa. No need for a Customise button.

And you can change which icons appear here:

Rt click taskbar, taskbar settings.


Appearance: anyway, this is mine:


I use Aeroglass:
Aero Glass for Win8+

- which changes the borders.

There are many things that are different from e.g. Win 7- some you can change, some you have to live with if you use Win 10.