html, body {
  background-color: #FFF;
}

div.background {
  position: fixed;
  width: 100%;
  height: 100%;
  margin: 2em;
  background-repeat:no-repeat;
  background-size: contain;
  background-position: center;
}

form.login-form {
  position: absolute;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  box-shadow: 5px 5px 50px 10px #444444;
}

img.app-logo {
  width: unset;
  height: auto;
}

/* mobile phone */
@media all and (max-width: 768px) {
  div.background {
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: 0;
    background-size: cover;
  }
  span.footer {
    display: none;
  }
}