html , body{
	height:100%;
	margin:0px;
	padding:0px;
	font-family: 'Samim', tahoma;
	font-size:12px;
}
body{
	background:url(../img/bg.jpg) center center fixed;
	background-size:cover;
	display:flex;
}
div{
	border-radius:8px;
	padding:10px;    
	width: 600px;
    margin: auto;
    align-items: center;
    text-align: center;
	color: #000;
    text-shadow: 0px 2px 0px #999;
}
div > div{
	background:rgba(10,10,10,0.7);
    color: #fff;
    text-shadow: none;
}
a{
	text-decoration:none;
	background:rgba(10,10,10,0.7);
	border-radius:8px;
	display:inline-block; 
	transition:0.3s;
	color:#f90;
	padding:8px;
}
a img{
	display:block;
	-webkit-filter: grayscale(80%);
    filter: grayscale(80%); 
	transition:0.3s;
	opacity:0.5;
}
a:hover{color:#fff; transition:0.3s;}
a:hover img{
	display:block;
	opacity:1;
	-webkit-filter: grayscale(0%);
    filter: grayscale(0%);
	transition:0.3s;
}