<!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <title>3D Music sequencer</title> </head> <style>
#main { width: 100%; height: 100%; background-color: #000000; color: #ffffff; text-align: center; } #main .container { width: 100%; height: 100%; background-color: #000000; color: #ffffff; text-align: center; } #main .container .row { width: 100%; height: 100%; background-color: #000000; color: #ffffff;