#modal-background {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: white;
    opacity: .50;
    filter: alpha(opacity=50);
    z-index: 9999;
}
#pincontainer {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 300px;
    transform: translate(-50%,-50%);
    margin: 0 auto;
    padding: 20px;
    text-align: center;
    background: #ccc;
    color: black;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    -webkit-box-shadow: 0px 0px 6px -1px rgba(50, 50, 50, 0.75);
    -moz-box-shadow: 0px 0px 6px -1px rgba(50, 50, 50, 0.75);
    box-shadow: 0px 0px 6px -1px rgba(50, 50, 50, 0.75);
    z-index:10000;
}    
#modal-background.active, #pincontainer.active {
    display: block;
}

.pinlogin .pinlogin-field
{
	box-sizing:border-box;
	
	display:inline-block;
	
	width: 40px;
	height: 40px;
	
	padding: 5px;
	
	margin: 0 10px;
	
	border:1px solid #ccc;
	
	-webkit-border-radius:2px;
	-moz-border-radius:2px;	
	border-radius: 2px;
	
	text-align:center;

}

.pinlogin .pinlogin-field:first-of-type {
    margin-left: 0;
}

.pinlogin .pinlogin-field:last-of-type {
    margin-right: 0;
}

.pinlogin .pinlogin-field:read-only
{
	border:1px solid #ddd;
	background:#fafafa;
	cursor:default;
}

.pinlogin .pinlogin-field.invalid
{
	border:1px solid red;
	color:red;
}