<style type="text/css">

body 
{
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  
  /*overflow: hidden; */  /* don't show scrollbars !*/
  
  font-family: Arial, Helvetica, sans-serif; 
  font-size: 12px; 
  
    
}

.p5Canvas
{ 
  z-index:20;
  position: absolute;
  
  max-height: 100%;
  max-width: 100%;

  object-fit: contain;
  
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);  
}
  
.css_background
{
	top: 0px;left: 0px;  width:100%; height:100%;
	z-index:11; border-width:0px; position: fixed;
  background-color: #111;
}

</style>