body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    background-image: url('bg1.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

h1 {
  display: none;
}

.instruction {
   display: none;
}


canvas {
    display: block;
    width: 100vw;
    height: 100vh;
    background-color: transparent;
}