i want to know how to send from order from it to arduino as ( turn on light i want to press on it in website and send it to arduino)
The Arduino needs to serve up the web page, containing a form with submit buttons on it, and an action script that refers to the original page.
The browser sends a request for the page, like
GET /LEDControl.htm HTTP 1.0
This request is generated when the user enters
http://arduinoaddress/LEDControl.htm
in the address bar.
When the action field is also LEDControl.htm, and a submit button named 12 with a value of ON is clicked, the browser redirects to
http://arduinoaddress/LEDControl.htm?12=ON
which generates a GET request:
GET /LEDControl.htm?12=ON HTTP 1.0
The Arduino then needs to parse the get request to see what the client is asking for. It is easy to look for the ? in the request, and parse the stuff that follows it, if it is present. If not, serve up the original page.
If it is, perform whatever action the stuff following the ? indicates needs to be done, and serve up a modified page, perhaps showing that the LED on pin 12 is on.
The website you have developed so far is useless, because the Arduino needs to be the server.