@font-face {font-family:Roboto;src:url(Roboto-Black.ttf);}*{font-family:Roboto,sans-serif;}body{margin:0;background-color:black}main{height:100vh;width:100vw;}canvas#canvas{display:block;background:black;}main .box{position:absolute;color:black;top:50%;margin-top:-40px;left:50%;margin-left:-200px;display:block;position:absolute;background-color:white;height:80px;width:400px;text-align:center;}