html, body {
    overflow: hidden;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
  }

  Canvas {
    width: 100%;
    height: 100%;
    touch-action: none;
    z-index: 10; 
  }
  
#Txtweiss { 
font-size:1.4em; font-weight:normal; font-family:Arial, AvantGarde,New Times Roman;
color: #FFFFFF;  
z-index: 100; 
position: absolute;
top: 50px;
left: 20px;
}