html, body {
  margin: 0;
  padding: 0;

}
canvas {
  display: block;
  
    /* This centers our sketch horizontally. */
  justify-content: center;

  /* This centers our sketch vertically. */
  align-items: center;
  
  box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  
  
  text-align:center;
}

#p5_loading {
  color: #FFF;
  font-family: Arial, Helvetica, sans-serif; 
  height: 50%;
  width: 50%;
  overflow: auto;
  margin: 30% 40%;
  position: absolute;
  z-index: 3;
}