body {
  background: #87ceeb;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

.error-body {
  height: 100%;
}

.error-image {
  height: 100%;
}

form.user .form-control-user {
  box-sizing: content-box;
  padding: 0.5rem 1rem;
  width: calc(100% - 2rem);
}