html,
body {
  height: 100%;
}

body {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #f5f5f5;
}

@media (min-width: 768px) {
  body {
    position: relative;
    overflow-x: hidden;
    background: url("https://login.certification.systems/images/login-background-skyline.jpg") no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
  }

    body::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgb(255 255 255 / 20%); /* adjust opacity as needed */
      z-index: -1;
    }
}

.form-control:focus {
  color: #495057;
  background-color: #fff;
  box-shadow: 0 0 0 0.05rem rgba(30,215,56);
}

.btn {
  background-color: rgba(0, 46, 78);
  border-color: rgba(0, 46, 78);
  border-radius: 0px;
  font-size: 16px;
}


  .btn:hover, btn:active, .btn-primary.disabled, .btn-primary:disabled {
    background-color: rgb(23, 73, 108) !important;
    border-color: rgba(0, 46, 78) !important;
  }

.form-signin {
  width: 100%;
  max-width: 400px;
  padding: 50px;
  margin: auto;
  background-color: #FFFFFF;
  border-radius: 0px;
}

  .form-signin .checkbox {
    font-weight: 400;
  }

  .form-signin .form-control,
  .form-signin .form-control-plaintext {
    position: relative;
    box-sizing: border-box;
    height: auto;
    padding: 10px;
    font-size: 16px;
  }

    .form-signin .form-control:focus {
      z-index: 2;
    }

  .form-signin input[type="email"] {
    margin-bottom: -1px;
    border-radius: 0;
    font-size: 14px;
  }

  .form-signin input[type="password"] {
    margin-bottom: 10px;
    border-radius: 0px;
    border-collapse: collapse;
  }

.vertical-align--text-bottom {
  vertical-align: text-bottom;
}

.form-control-plaintext:focus {
  outline: none;
}