body{
    font-family: verdana;
    font-size: 50px;
  }

  .center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}


#ARtext{
width:100%;
 background: rgba(256, 256, 256, 0.6);
 position: absolute;
 top:0px;
 z-index: 1000;
}