#player_curtain {
display: none;
background: #454545;
background: rgba(69, 69, 69, 0.9);
width: 100%;
height: 100%;
position: fixed;
top: 0;
left: 0;
z-index: 1990;
cursor:pointer;
}
#player_container {
position:absolute;
-moz-box-shadow: 0 1px 3px #ddd;
-webkit-box-shadow: 0 1px 3px #ddd;
box-shadow: 0 1px 3px #ddd;
background-color: white;
padding: 10px;
z-index: 2000;
width:640px;
top:20px;
left:%50;
margin-left:320px;
display: none; 
}
#player_close{
margin-left:99%;
z-index:2001;
cursor:pointer;
}
#how_to_play
{
background-color:white;
width:100px;
cursor:pointer;
text-align: center;
top:11px;
left:46%;
padding:10px 20px;
position:fixed;
z-index: 1001;
background: rgba(255, 255, 255, 0.8);
box-shadow: 0 4px 5px rgba(228,228,250,0.5)
}{
	&:hover
	@include box-shadow: 0 4px 5px rgba(228,228,250,0.5)
			background: rgb(255,255,255);
}