body{
  min-width: 100%;
  min-height: 100vh;
  background-image: url(../../img/background.png);
  background-attachment: fixed;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}

.error {
    color: red;
    display: none;
}

.bien {
    color: green;
    display: none;
}

.error-input {
  border: 1px solid red;
}

.bien-input {
  border: 1px solid green;
}