@mixin form-control-focus-rules(){
  color: $input-focus-color;
  background-color: $input-focus-bg;
  border-color: $input-focus-border-color;
  outline: 0;
  // Avoid using mixin so we can pass custom focus shadow properly
  @if $enable-shadows {
    box-shadow: $input-box-shadow, $input-focus-box-shadow;
  } @else {
    box-shadow: $input-focus-box-shadow;
  }
}