html, body {
  background-color: rgb(255);
  margin: 0;
  padding: 0;
  overflow:hidden;
}
canvas {
  padding-left: 0;
  padding-right: 0;
  margin-left: auto;
  margin-right: auto;
  display: block;
  width: 800px;
}

canvas {
  /*cursor:none;*/
}


#gyroholder {
  position: absolute;
  z-index: 100;
  width:200px;
  height:100px;
  width:100%;
  padding-top:25%;
}

#gyrobutton {
  display:block;
  margin-left: auto;
  margin-right: auto;
  width:200px;
  height:100px;
}