.auth_form {
  max-width: 420px;
  margin: 0 auto;
}
.auth_form .form_item {
  margin-bottom: 1.2em;
}
.auth_form label {
  font-weight: bold;
  margin-bottom: .5em;
  display: block;
}
.auth_form input.parts_text,
.auth_form select.parts_text {
  width: 100%;
  padding: 8px;
}
.auth_form .error_message {
  color: #C60101;
  margin-bottom: 1em;
}
.auth_form .form_action {
  text-align: center;
  margin-top: 1.5em;
}
.auth_form .parts_button {
  display: inline-block;
  width: 100%;
  text-align: center;
}