Input box: Error

/*------------------------------------*\
    #INPUTBOX
\*------------------------------------*/

.input-box__label {
  display: block;
  padding: 0 0 5px 5px;
}

.input-box {
  min-width: 238px;
  border-radius: $radius-default;
  border: 1px solid $border-form;
  padding: 3px 5px;
  position: relative;
  font-size: 14px;
  color: $color-default;
  margin: 0;
}

.input-box:hover {
  border-color: $border-default;
}

.input-box:focus,
.input-box[checked] {
  border-color: $border-active;
  outline: none;
  box-shadow: 2px 0 0 0 $border-active inset;
}

.input-box:disabled {
  opacity: .5;
  background-color: $background-disabled;

  &:hover {
    border-color: $border-form;
  }
}

.input-box[readonly],
.input-box[readonly]:focus {
  border-color: $border-disabled;
  box-shadow: none;
}

.input-box--error {
  box-shadow: 2px 0 0 0 $border-error inset;
}

.input-box--error:focus,
.input-box--error[checked] {
  border-color: $border-error;
  box-shadow: 2px 0 0 0 $border-error inset;
}

.input-box--warning,
.input-box--warning:hover,
.input-box--warning:focus {
  border-color: $border-warning;
  box-shadow: 2px 0 0 0 $border-warning inset;
}