body{
	position: relative;
}
body:before{
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	display: block;
	width: 100%;
	height: 100vh;
	background-color: rgba(0,0,0,0.5);
}
.card{
    max-width: 400px;
    min-width: 400px;
    background-color: rgba(255,255,255,0.8);
    border: none;
    padding: 25px 0;
    margin: 30px;
}
.card-header{
	background-color: transparent;
}
.card-header h3{
	color: #000;
}
.card-header img{
	width: 150px;
}