body {
background-color:#000000;
margin-top:0;
margin-right:0;
}

#logo {
margin-top:20px;
margin-left:40px;
margin-right:40px;
margin-bottom:20px;
}

.pulsanti  {
margin-top:0px;
margin-left:10px;
margin-right:10px;
margin-bottom:0px;
}