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# Input group

Easily extend form controls by adding text, buttons, or button groups on either side of textual inputs, custom selects, and custom file inputs.

## Basic example

Place one add-on or button on either side of an input. You may also place one on both sides of an input. We do not support multiple form-controls in a single input group and `<label>`s must come outside the input group.

@
@example.com
Your vanity URL
https://example.com/users/
$
.00
With textarea

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <span class="input-group-text" id="basic-addon1">@</span>
      </div>
      <input type="text" class="form-control" placeholder="Username" aria-label="Username" aria-describedby="basic-addon1">
    </div>

    <div class="input-group mb-3">
      <input type="text" class="form-control" placeholder="Recipient's username" aria-label="Recipient's username" aria-describedby="basic-addon2">
      <div class="input-group-append">
        <span class="input-group-text" id="basic-addon2">@example.com</span>
      </div>
    </div>

    <label for="basic-url">Your vanity URL</label>
    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <span class="input-group-text" id="basic-addon3">https://example.com/users/</span>
      </div>
      <input type="text" class="form-control" id="basic-url" aria-describedby="basic-addon3">
    </div>

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <span class="input-group-text">$</span>
      </div>
      <input type="text" class="form-control" aria-label="Amount (to the nearest dollar)">
      <div class="input-group-append">
        <span class="input-group-text">.00</span>
      </div>
    </div>

    <div class="input-group">
      <div class="input-group-prepend">
        <span class="input-group-text">With textarea</span>
      </div>
      <textarea class="form-control" aria-label="With textarea"></textarea>
    </div>

## Sizing

Add the relative form sizing classes to the `.input-group` itself and contents within will automatically resize—no need for repeating the form control size classes on each element.

Sizing on the individual input group elements isn’t supported.

Small
Default
Large

    <div class="input-group input-group-sm mb-3">
      <div class="input-group-prepend">
        <span class="input-group-text" id="inputGroup-sizing-sm">Small</span>
      </div>
      <input type="text" class="form-control" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
    </div>

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <span class="input-group-text" id="inputGroup-sizing-default">Default</span>
      </div>
      <input type="text" class="form-control" aria-label="Default" aria-describedby="inputGroup-sizing-default">
    </div>

    <div class="input-group input-group-lg">
      <div class="input-group-prepend">
        <span class="input-group-text" id="inputGroup-sizing-lg">Large</span>
      </div>
      <input type="text" class="form-control" aria-label="Large" aria-describedby="inputGroup-sizing-sm">
    </div>

## Checkboxes and radios

Place any checkbox or radio option within an input group’s addon instead of text.

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <div class="input-group-text">
          <input type="checkbox" aria-label="Checkbox for following text input">
        </div>
      </div>
      <input type="text" class="form-control" aria-label="Text input with checkbox">
    </div>

    <div class="input-group">
      <div class="input-group-prepend">
        <div class="input-group-text">
        <input type="radio" aria-label="Radio button for following text input">
        </div>
      </div>
      <input type="text" class="form-control" aria-label="Text input with radio button">
    </div>

## Multiple inputs

While multiple `<input>`s are supported visually, validation styles are only available for input groups with a single `<input>`.

First and last name

    <div class="input-group">
      <div class="input-group-prepend">
        <span class="input-group-text" id="">First and last name</span>
      </div>
      <input type="text" class="form-control">
      <input type="text" class="form-control">
    </div>

## Multiple addons

Multiple add-ons are supported and can be mixed with checkbox and radio input versions.

$ 0.00
$ 0.00

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <span class="input-group-text">$</span>
        <span class="input-group-text">0.00</span>
      </div>
      <input type="text" class="form-control" aria-label="Amount (to the nearest dollar)">
    </div>

    <div class="input-group">
      <input type="text" class="form-control" aria-label="Amount (to the nearest dollar)">
      <div class="input-group-append">
        <span class="input-group-text">$</span>
        <span class="input-group-text">0.00</span>
      </div>
    </div>

## Button addons

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <button class="btn btn-outline-secondary" type="button">Button</button>
      </div>
      <input type="text" class="form-control" placeholder="" aria-label="" aria-describedby="basic-addon1">
    </div>

    <div class="input-group mb-3">
      <input type="text" class="form-control" placeholder="Recipient's username" aria-label="Recipient's username" aria-describedby="basic-addon2">
      <div class="input-group-append">
        <button class="btn btn-outline-secondary" type="button">Button</button>
      </div>
    </div>

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <button class="btn btn-outline-secondary" type="button">Button</button>
        <button class="btn btn-outline-secondary" type="button">Button</button>
      </div>
      <input type="text" class="form-control" placeholder="" aria-label="" aria-describedby="basic-addon1">
    </div>

    <div class="input-group">
      <input type="text" class="form-control" placeholder="Recipient's username" aria-label="Recipient's username" aria-describedby="basic-addon2">
      <div class="input-group-append">
        <button class="btn btn-outline-secondary" type="button">Button</button>
        <button class="btn btn-outline-secondary" type="button">Button</button>
      </div>
    </div>

## Buttons with dropdowns

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</button>
        <div class="dropdown-menu">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <a class="dropdown-item" href="#">Something else here</a>
          <div role="separator" class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Separated link</a>
        </div>
      </div>
      <input type="text" class="form-control" aria-label="Text input with dropdown button">
    </div>

    <div class="input-group">
      <input type="text" class="form-control" aria-label="Text input with dropdown button">
      <div class="input-group-append">
        <button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</button>
        <div class="dropdown-menu">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <a class="dropdown-item" href="#">Something else here</a>
          <div role="separator" class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Separated link</a>
        </div>
      </div>
    </div>

## Segmented buttons

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <button type="button" class="btn btn-outline-secondary">Action</button>
        <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          <span class="sr-only">Toggle Dropdown</span>
        </button>
        <div class="dropdown-menu">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <a class="dropdown-item" href="#">Something else here</a>
          <div role="separator" class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Separated link</a>
        </div>
      </div>
      <input type="text" class="form-control" aria-label="Text input with segmented dropdown button">
    </div>

    <div class="input-group">
      <input type="text" class="form-control" aria-label="Text input with segmented dropdown button">
      <div class="input-group-append">
        <button type="button" class="btn btn-outline-secondary">Action</button>
        <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          <span class="sr-only">Toggle Dropdown</span>
        </button>
        <div class="dropdown-menu">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <a class="dropdown-item" href="#">Something else here</a>
          <div role="separator" class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Separated link</a>
        </div>
      </div>
    </div>

## Custom forms

Input groups include support for custom selects and custom file inputs. Browser default versions of these are not supported.

### Custom select

Options
Options

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <label class="input-group-text" for="inputGroupSelect01">Options</label>
      </div>
      <select class="custom-select" id="inputGroupSelect01">
        <option selected>Choose...</option>
        <option value="1">One</option>
        <option value="2">Two</option>
        <option value="3">Three</option>
      </select>
    </div>

    <div class="input-group mb-3">
      <select class="custom-select" id="inputGroupSelect02">
        <option selected>Choose...</option>
        <option value="1">One</option>
        <option value="2">Two</option>
        <option value="3">Three</option>
      </select>
      <div class="input-group-append">
        <label class="input-group-text" for="inputGroupSelect02">Options</label>
      </div>
    </div>

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <button class="btn btn-outline-secondary" type="button">Button</button>
      </div>
      <select class="custom-select" id="inputGroupSelect03">
        <option selected>Choose...</option>
        <option value="1">One</option>
        <option value="2">Two</option>
        <option value="3">Three</option>
      </select>
    </div>

    <div class="input-group">
      <select class="custom-select" id="inputGroupSelect04">
        <option selected>Choose...</option>
        <option value="1">One</option>
        <option value="2">Two</option>
        <option value="3">Three</option>
      </select>
      <div class="input-group-append">
        <button class="btn btn-outline-secondary" type="button">Button</button>
      </div>
    </div>

### Custom file input

Upload
Choose file
Choose file
Upload
Choose file
Choose file

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <span class="input-group-text">Upload</span>
      </div>
      <div class="custom-file">
        <input type="file" class="custom-file-input" id="inputGroupFile01">
        <label class="custom-file-label" for="inputGroupFile01">Choose file</label>
      </div>
    </div>

    <div class="input-group mb-3">
      <div class="custom-file">
        <input type="file" class="custom-file-input" id="inputGroupFile02">
        <label class="custom-file-label" for="inputGroupFile02">Choose file</label>
      </div>
      <div class="input-group-append">
        <span class="input-group-text" id="">Upload</span>
      </div>
    </div>

    <div class="input-group mb-3">
      <div class="input-group-prepend">
        <button class="btn btn-outline-secondary" type="button">Button</button>
      </div>
      <div class="custom-file">
        <input type="file" class="custom-file-input" id="inputGroupFile03">
        <label class="custom-file-label" for="inputGroupFile03">Choose file</label>
      </div>
    </div>

    <div class="input-group">
      <div class="custom-file">
        <input type="file" class="custom-file-input" id="inputGroupFile04">
        <label class="custom-file-label" for="inputGroupFile04">Choose file</label>
      </div>
      <div class="input-group-append">
        <button class="btn btn-outline-secondary" type="button">Button</button>
      </div>
    </div>

## Accessibility

Screen readers will have trouble with your forms if you don’t include a label for every input. For these input groups, ensure that any additional label or functionality is conveyed to assistive technologies.

The exact technique to be used (`<label>` elements hidden using the `.sr-only` class, or use of the `aria-label` and `aria-labelledby` attributes, possibly in combination with `aria-describedby`) and what additional information will need to be conveyed will vary depending on the exact type of interface widget you’re implementing. The examples in this section provide a few suggested, case-specific approaches.