html,
body {
  height: 100%;
  overflow: hidden;
  width: 100%;
}

body {
  background: linear-gradient(to bottom, #0A2239, rgb(15, 55, 92), #165086);
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
}

#login-box {
  background: #fff;
}

#login-box-poster {
  height: 100%;
}

#login-box-header img {
  height: 197px;
}

#qc-login-box-header img {
  height: 197px;
}

#login-box-footer img {
  width: 50%;
}

#login-image {
  min-width: 60%;
  max-width: 70%;
}

@media (min-width: 768px) {
  #login-box {
    height: 100%;
    padding: 4rem 2rem;
    right: 0;
    width: 510px;
  }
}

@media (max-width: 767px) {

  body {
    background: url('/assets/images/backgrounds/qc-login.jpg');
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
  }

  #login-box {
    border-radius: 0.25rem;
    left: 50%;
    padding: 2rem;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
  }
  #login-box-poster{
    visibility: hidden !important;
  }

  #qc-login-box-header {
    display: flex !important;
    justify-content: center; /* horizontally center */
    align-items: center;     /* vertically center (optional) */
  }

  #qc-login-box-header img {
    height: 140px;
  }
}