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# Floating labels

Create beautifully simple form labels that float over your input fields.

## Example

Wrap a pair of `<input class="form-control">` and `<label>` elements in `.form-floating` to enable floating labels with Bootstrap’s textual form fields. A `placeholder` is required on each `<input>` as our method of CSS-only floating labels uses the `:placeholder-shown` pseudo-element. Also note that the `<input>` must come first so we can utilize a sibling selector (e.g., `~`).

Email address
Password
html

    <div class="form-floating mb-3">
      <input type="email" class="form-control" id="floatingInput" placeholder="name@example.com">
      <label for="floatingInput">Email address</label>
    </div>
    <div class="form-floating">
      <input type="password" class="form-control" id="floatingPassword" placeholder="Password">
      <label for="floatingPassword">Password</label>
    </div>

When there’s a `value` already defined, `<label>`s will automatically adjust to their floated position.

Input with value
html

    <form class="form-floating">
      <input type="email" class="form-control" id="floatingInputValue" placeholder="name@example.com" value="test@example.com">
      <label for="floatingInputValue">Input with value</label>
    </form>

Form validation styles also work as expected.

Invalid input
html

    <form class="form-floating">
      <input type="email" class="form-control is-invalid" id="floatingInputInvalid" placeholder="name@example.com" value="test@example.com">
      <label for="floatingInputInvalid">Invalid input</label>
    </form>

## Textareas

By default, `<textarea>`s with `.form-control` will be the same height as `<input>`s.

Comments
html

    <div class="form-floating">
      <textarea class="form-control" placeholder="Leave a comment here" id="floatingTextarea"></textarea>
      <label for="floatingTextarea">Comments</label>
    </div>

To set a custom height on your `<textarea>`, do not use the `rows` attribute. Instead, set an explicit `height` (either inline or via custom CSS).

Comments
html

    <div class="form-floating">
      <textarea class="form-control" placeholder="Leave a comment here" id="floatingTextarea2" style="height: 100px"></textarea>
      <label for="floatingTextarea2">Comments</label>
    </div>

## Selects

Other than `.form-control`, floating labels are only available on `.form-select`s. They work in the same way, but unlike `<input>`s, they’ll always show the `<label>` in its floated state. Selects with `size` and `multiple` are not supported.

Works with selects
html

    <div class="form-floating">
      <select class="form-select" id="floatingSelect" aria-label="Floating label select example">
        <option selected>Open this select menu</option>
        <option value="1">One</option>
        <option value="2">Two</option>
        <option value="3">Three</option>
      </select>
      <label for="floatingSelect">Works with selects</label>
    </div>

## Readonly plaintext

Floating labels also support `.form-control-plaintext`, which can be helpful for toggling from an editable `<input>` to a plaintext value without affecting the page layout.

Empty input
Input with value
html

    <div class="form-floating mb-3">
      <input type="email" readonly class="form-control-plaintext" id="floatingEmptyPlaintextInput" placeholder="name@example.com">
      <label for="floatingEmptyPlaintextInput">Empty input</label>
    </div>
    <div class="form-floating mb-3">
      <input type="email" readonly class="form-control-plaintext" id="floatingPlaintextInput" placeholder="name@example.com" value="name@example.com">
      <label for="floatingPlaintextInput">Input with value</label>
    </div>

## Input groups

Floating labels also support `.input-group`.

@
Username
html

    <div class="input-group mb-3">
      <span class="input-group-text">@</span>
      <div class="form-floating">
        <input type="text" class="form-control" id="floatingInputGroup1" placeholder="Username">
        <label for="floatingInputGroup1">Username</label>
      </div>
    </div>

When using `.input-group` and `.form-floating` along with form validation, the `-feedback` should be placed outside of the `.form-floating`, but inside of the `.input-group`. This means that the feedback will need to be shown using javascript.

@
Username
Please choose a username.
html

    <div class="input-group has-validation">
      <span class="input-group-text">@</span>
      <div class="form-floating is-invalid">
        <input type="text" class="form-control is-invalid" id="floatingInputGroup2" placeholder="Username" required>
        <label for="floatingInputGroup2">Username</label>
      </div>
      <div class="invalid-feedback">
        Please choose a username.
      </div>
    </div>

## Layout

When working with the Bootstrap grid system, be sure to place form elements within column classes.

Email address
Works with selects
html

    <div class="row g-2">
      <div class="col-md">
        <div class="form-floating">
          <input type="email" class="form-control" id="floatingInputGrid" placeholder="name@example.com" value="mdo@example.com">
          <label for="floatingInputGrid">Email address</label>
        </div>
      </div>
      <div class="col-md">
        <div class="form-floating">
          <select class="form-select" id="floatingSelectGrid">
            <option selected>Open this select menu</option>
            <option value="1">One</option>
            <option value="2">Two</option>
            <option value="3">Three</option>
          </select>
          <label for="floatingSelectGrid">Works with selects</label>
        </div>
      </div>
    </div>

## Sass

### Variables

    $form-floating-height:            add(3.5rem, $input-height-border);
    $form-floating-line-height:       1.25;
    $form-floating-padding-x:         $input-padding-x;
    $form-floating-padding-y:         1rem;
    $form-floating-input-padding-t:   1.625rem;
    $form-floating-input-padding-b:   .625rem;
    $form-floating-label-opacity:     .65;
    $form-floating-label-transform:   scale(.85) translateY(-.5rem) translateX(.15rem);
    $form-floating-transition:        opacity .1s ease-in-out, transform .1s ease-in-out;