This website really can autoplay mp3 automatically in firefox and other browsers. Not like others code, which failed in firefox.

The mp3 is not autoplayed at the landing page. But as I click the button to the main page, the sound play automatically at the main page (one page website).

https://share.linkundangan.com/inv-preview/wedding-premium050?to=Tamu+Undangan

I've tried to read the code, but I,m not a coder. Would anybody give me the audio code of this site, please.