#entorno{
    display: block;
    margin: 0 auto;
}

#fondo{
    opacity: 0.3;
}

#fondo image{
    width: 400px;
    height: 400px;
    x: 200;
    y: 100;
}

#divPuzzle{
    border-radius: 50px;
    border: 2px solid #cbcbcb;
    box-shadow: 5px 5px 5px #89c38c;
}