body {
    font-family: Sans-Serif, serif;
    background: #475d62 url(/assets/img/Hintergrund.jpeg) no-repeat fixed;
    background-size: cover;
    color: white;
    position:relative;
}

.login-dark {
    height: 1000px;
}

.login-header {
    text-align: center;
}

.login-dark form {
    width: 450px;
    background-color:#1e2833;
    padding:40px;
    border-radius:4px;
    transform:translate(-50%, -50%);
    position:absolute;
    top:50%;
    left:50%;
    color:#fff;
    box-shadow:3px 3px 4px rgba(0,0,0,0.2);
}

.login-dark .illustration {
    text-align:center;
    padding:15px 0 20px;
    margin-bottom: 50px;
}

.login-dark form .form-control {
    background:none;
    border:none;
    border-bottom:1px solid #434a52;
    border-radius:0;
    box-shadow:none;
    outline:none;
    color:inherit;
}

.login-dark form .btn-primary {
    background:#214a80;
    border:none;
    border-radius:4px;
    padding:11px;
    box-shadow:none;
    margin-top:26px;
    text-shadow:none;
    outline:none;
}

.login-dark form .btn-primary:hover, .login-dark form .btn-primary:active {
    background:#214a80;
    outline:none;
}

.login-dark form .btn-primary:active {
    transform:translateY(1px);
}

.btn-submit {
    text-align: center;
}

.pwd-invalid {
    color: #dc3545;
}

.pwd-valid {
    color: #198754;
}