body{
background-color: black;
background-image: url(background.jpg);
background-repeat:no-repeat;
background-position:top;
}
div.desktop{
width:414px;
height:220px;
margin-left:auto;
margin-right: auto;
margin-top: 00px; 
}
div.player{
margin-left:auto;
margin-right: auto;
margin-top: 60px; 
width: 853px;
height: 480px;
}
div.song{
margin-left:auto;
margin-right: auto;
margin-top: 10px; 
width: 450px;
height: 150px;
}