.login-dark {
  height: 100vh;
  position: relative;
  overflow: hidden;
  background: url('https://i.imgur.com/412jmqL.jpg') no-repeat center center fixed;
  background-size: cover;
}

.login-dark::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: -1;
}

.form-title {
  text-align: center;
  font-size: 2em;
  font-weight: bold;
  color: white;
  margin-bottom
}

.login-dark form {
  max-width:320px;
  width:90%;
  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;
  font-size:100px;
  color:#2980ef;
}

.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 .forgot {
  display:block;
  text-align:center;
  font-size:12px;
  color:#6f7a85;
  opacity:0.9;
  text-decoration:none;
}

.login-dark form .forgot:hover, .login-dark form .forgot:active {
  opacity:1;
  text-decoration:none;
}

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