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# Form controls

Give textual form controls like `<input>`s and `<textarea>`s an upgrade with custom styles, sizing, focus states, and more.

## Example

Email address
Example textarea
html

    <div class="mb-3">
      <label for="exampleFormControlInput1" class="form-label">Email address</label>
      <input type="email" class="form-control" id="exampleFormControlInput1" placeholder="name@example.com">
    </div>
    <div class="mb-3">
      <label for="exampleFormControlTextarea1" class="form-label">Example textarea</label>
      <textarea class="form-control" id="exampleFormControlTextarea1" rows="3"></textarea>
    </div>

## Sizing

Set heights using classes like `.form-control-lg` and `.form-control-sm`.

html

    <input class="form-control form-control-lg" type="text" placeholder=".form-control-lg" aria-label=".form-control-lg example">
    <input class="form-control" type="text" placeholder="Default input" aria-label="default input example">
    <input class="form-control form-control-sm" type="text" placeholder=".form-control-sm" aria-label=".form-control-sm example">

## Disabled

Add the `disabled` boolean attribute on an input to give it a grayed out appearance, remove pointer events, and prevent focusing.

html

    <input class="form-control" type="text" placeholder="Disabled input" aria-label="Disabled input example" disabled>
    <input class="form-control" type="text" value="Disabled readonly input" aria-label="Disabled input example" disabled readonly>

## Readonly

Add the `readonly` boolean attribute on an input to prevent modification of the input’s value. `readonly` inputs can still be focused and selected, while `disabled` inputs cannot.

html

    <input class="form-control" type="text" value="Readonly input here..." aria-label="readonly input example" readonly>

## Readonly plain text

If you want to have `<input readonly>` elements in your form styled as plain text, replace `.form-control` with `.form-control-plaintext` to remove the default form field styling and preserve the correct `margin` and `padding`.

Email
Password
html

      <div class="mb-3 row">
        <label for="staticEmail" class="col-sm-2 col-form-label">Email</label>
        <div class="col-sm-10">
          <input type="text" readonly class="form-control-plaintext" id="staticEmail" value="email@example.com">
        </div>
      </div>
      <div class="mb-3 row">
        <label for="inputPassword" class="col-sm-2 col-form-label">Password</label>
        <div class="col-sm-10">
          <input type="password" class="form-control" id="inputPassword">
        </div>
      </div>

Email
Password
html

    <form class="row g-3">
      <div class="col-auto">
        <label for="staticEmail2" class="visually-hidden">Email</label>
        <input type="text" readonly class="form-control-plaintext" id="staticEmail2" value="email@example.com">
      </div>
      <div class="col-auto">
        <label for="inputPassword2" class="visually-hidden">Password</label>
        <input type="password" class="form-control" id="inputPassword2" placeholder="Password">
      </div>
      <div class="col-auto">
        <button type="submit" class="btn btn-primary mb-3">Confirm identity</button>
      </div>
    </form>

## File input

Default file input example
Multiple files input example
Disabled file input example
Small file input example
Large file input example
html

    <div class="mb-3">
      <label for="formFile" class="form-label">Default file input example</label>
      <input class="form-control" type="file" id="formFile">
    </div>
    <div class="mb-3">
      <label for="formFileMultiple" class="form-label">Multiple files input example</label>
      <input class="form-control" type="file" id="formFileMultiple" multiple>
    </div>
    <div class="mb-3">
      <label for="formFileDisabled" class="form-label">Disabled file input example</label>
      <input class="form-control" type="file" id="formFileDisabled" disabled>
    </div>
    <div class="mb-3">
      <label for="formFileSm" class="form-label">Small file input example</label>
      <input class="form-control form-control-sm" id="formFileSm" type="file">
    </div>
    <div>
      <label for="formFileLg" class="form-label">Large file input example</label>
      <input class="form-control form-control-lg" id="formFileLg" type="file">
    </div>

## Color

Set the `type="color"` and add `.form-control-color` to the `<input>`. We use the modifier class to set fixed `height`s and override some inconsistencies between browsers.

Color picker
html

    <label for="exampleColorInput" class="form-label">Color picker</label>
    <input type="color" class="form-control form-control-color" id="exampleColorInput" value="#563d7c" title="Choose your color">

## Datalists

Datalists allow you to create a group of `<option>`s that can be accessed (and autocompleted) from within an `<input>`. These are similar to `<select>` elements, but come with more menu styling limitations and differences. While most browsers and operating systems include some support for `<datalist>` elements, their styling is inconsistent at best.

Learn more about support for datalist elements.

Datalist example
html

    <label for="exampleDataList" class="form-label">Datalist example</label>
    <input class="form-control" list="datalistOptions" id="exampleDataList" placeholder="Type to search...">
    <datalist id="datalistOptions">
      <option value="San Francisco">
      <option value="New York">
      <option value="Seattle">
      <option value="Los Angeles">
      <option value="Chicago">
    </datalist>

## Sass

### Variables

`$input-*` are shared across most of our form controls (and not buttons).

    $input-padding-y:                       $input-btn-padding-y;
    $input-padding-x:                       $input-btn-padding-x;
    $input-font-family:                     $input-btn-font-family;
    $input-font-size:                       $input-btn-font-size;
    $input-font-weight:                     $font-weight-base;
    $input-line-height:                     $input-btn-line-height;

    $input-padding-y-sm:                    $input-btn-padding-y-sm;
    $input-padding-x-sm:                    $input-btn-padding-x-sm;
    $input-font-size-sm:                    $input-btn-font-size-sm;

    $input-padding-y-lg:                    $input-btn-padding-y-lg;
    $input-padding-x-lg:                    $input-btn-padding-x-lg;
    $input-font-size-lg:                    $input-btn-font-size-lg;

    $input-bg:                              $body-bg;
    $input-disabled-color:                  null;
    $input-disabled-bg:                     $gray-200;
    $input-disabled-border-color:           null;

    $input-color:                           $body-color;
    $input-border-color:                    $gray-400;
    $input-border-width:                    $input-btn-border-width;
    $input-box-shadow:                      $box-shadow-inset;

    $input-border-radius:                   $border-radius;
    $input-border-radius-sm:                $border-radius-sm;
    $input-border-radius-lg:                $border-radius-lg;

    $input-focus-bg:                        $input-bg;
    $input-focus-border-color:              tint-color($component-active-bg, 50%);
    $input-focus-color:                     $input-color;
    $input-focus-width:                     $input-btn-focus-width;
    $input-focus-box-shadow:                $input-btn-focus-box-shadow;

    $input-placeholder-color:               $gray-600;
    $input-plaintext-color:                 $body-color;

    $input-height-border:                   $input-border-width * 2;

    $input-height-inner:                    add($input-line-height * 1em, $input-padding-y * 2);
    $input-height-inner-half:               add($input-line-height * .5em, $input-padding-y);
    $input-height-inner-quarter:            add($input-line-height * .25em, $input-padding-y * .5);

    $input-height:                          add($input-line-height * 1em, add($input-padding-y * 2, $input-height-border, false));
    $input-height-sm:                       add($input-line-height * 1em, add($input-padding-y-sm * 2, $input-height-border, false));
    $input-height-lg:                       add($input-line-height * 1em, add($input-padding-y-lg * 2, $input-height-border, false));

    $input-transition:                      border-color .15s ease-in-out, box-shadow .15s ease-in-out;

    $form-color-width:                      3rem;

`$form-label-*` and `$form-text-*` are for our `<label>`s and `.form-text` component.

    $form-label-margin-bottom:              .5rem;
    $form-label-font-size:                  null;
    $form-label-font-style:                 null;
    $form-label-font-weight:                null;
    $form-label-color:                      null;

    $form-text-margin-top:                  .25rem;
    $form-text-font-size:                   $small-font-size;
    $form-text-font-style:                  null;
    $form-text-font-weight:                 null;
    $form-text-color:                       $text-muted;

`$form-file-*` are for file input.

    $form-file-button-color:          $input-color;
    $form-file-button-bg:             $input-group-addon-bg;
    $form-file-button-hover-bg:       shade-color($form-file-button-bg, 5%);