Skip to main content

Components

Over a dozen reusable components built to provide buttons, dropdowns, input groups, navigation, alerts, and much more.

Forms

Bootstrap provides several form control styles, layout options, and custom components for creating a wide variety of forms.

Contents

Form controls

Bootstrap’s form controls expand on our Rebooted form styles with classes. Use these classes to opt into their customized displays for a more consistent rendering across browsers and devices. The example form below demonstrates common HTML form elements that receive updated styles from Bootstrap with additional classes.

Remember, since Bootstrap utilizes the HTML5 doctype, all inputs must have a type attribute.

We'll never share your email with anyone else.
This is some placeholder block-level help text for the above input. It's a bit lighter and easily wraps to a new line. 
<form>
  <fieldset class="form-group">
    <label for="exampleInputEmail1">Email address</label>
    <input type="email" class="form-control" id="exampleInputEmail1" aria-describedby="emailHelp" placeholder="Enter email">
    <small id="emailHelp" class="text-muted">We'll never share your email with anyone else.</small>
  </fieldset>
  <fieldset class="form-group">
    <label for="exampleInputPassword1">Password</label>
    <input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password">
  </fieldset>
  <fieldset class="form-group">
    <label for="exampleSelect1">Example select</label>
    <select class="form-control" id="exampleSelect1">
      <option>1</option>
      <option>2</option>
      <option>3</option>
      <option>4</option>
      <option>5</option>
    </select>
  </fieldset>
  <fieldset class="form-group">
    <label for="exampleSelect2">Example multiple select</label>
    <select multiple class="form-control" id="exampleSelect2">
      <option>1</option>
      <option>2</option>
      <option>3</option>
      <option>4</option>
      <option>5</option>
    </select>
  </fieldset>
  <fieldset class="form-group">
    <label for="exampleTextarea">Example textarea</label>
    <textarea class="form-control" id="exampleTextarea" rows="3"></textarea>
  </fieldset>
  <fieldset class="form-group">
    <label for="exampleInputFile">File input</label>
    <input type="file" class="form-control-file" id="exampleInputFile" aria-describedby="fileHelp">
    <small id="fileHelp" class="text-muted">This is some placeholder block-level help text for the above input. It's a bit lighter and easily wraps to a new line.</small>
  </fieldset>
  <div class="radio">
    <label>
      <input type="radio" name="optionsRadios" id="optionsRadios1" value="option1" checked>
      Option one is this and that&mdash;be sure to include why it's great
    </label>
  </div>
  <div class="radio">
    <label>
      <input type="radio" name="optionsRadios" id="optionsRadios2" value="option2">
      Option two can be something else and selecting it will deselect option one
    </label>
  </div>
  <div class="radio disabled">
    <label>
      <input type="radio" name="optionsRadios" id="optionsRadios3" value="option3" disabled>
      Option three is disabled
    </label>
  </div>
  <div class="checkbox">
    <label>
      <input type="checkbox"> Check me out
    </label>
  </div>
  <button type="submit" class="btn btn-primary">Submit</button>
</form>

Below is a complete list of the specific from controls supported by Bootstrap and the classes that customize them. Additional documentation is available for each group.

Classes Used for Supported variations

.form-group

 Any group of form controls

Use with any block-level element like <fieldset> or <div>

.form-control

 Textual inputs

text, password, datetime-local, date, month, time, week, number, email, url, search, tel, color
Select menus

multiple, size
Textareas N/A

.form-control-file

 File inputs

file

.radio
.radio-inline
.checkbox
.checkbox-inline

 Checkboxes and radios N/A

Textual inputs

Here are examples of .form-control applied to each textual HTML5 <input> type.

<div class="form-group row">
  <label for="example-text-input" class="col-xs-2 form-control-label">Text</label>
  <div class="col-xs-10">
    <input class="form-control" type="text" value="Artisanal kale" id="example-text-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-search-input" class="col-xs-2 form-control-label">Search</label>
  <div class="col-xs-10">
    <input class="form-control" type="search" value="How do I shoot web" id="example-search-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-email-input" class="col-xs-2 form-control-label">Email</label>
  <div class="col-xs-10">
    <input class="form-control" type="email" value="bootstrap@example.com" id="example-email-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-url-input" class="col-xs-2 form-control-label">URL</label>
  <div class="col-xs-10">
    <input class="form-control" type="url" value="http://getbootstrap.com" id="example-url-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-tel-input" class="col-xs-2 form-control-label">Telephone</label>
  <div class="col-xs-10">
    <input class="form-control" type="tel" value="1-(555)-555-5555" id="example-tel-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-password-input" class="col-xs-2 form-control-label">Password</label>
  <div class="col-xs-10">
    <input class="form-control" type="password" value="hunter2" id="example-password-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-number-input" class="col-xs-2 form-control-label">Number</label>
  <div class="col-xs-10">
    <input class="form-control" type="number" value="42" id="example-number-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-datetime-local-input" class="col-xs-2 form-control-label">Date and time</label>
  <div class="col-xs-10">
    <input class="form-control" type="datetime-local" value="2011-08-19T13:45:00" id="example-datetime-local-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-date-input" class="col-xs-2 form-control-label">Date</label>
  <div class="col-xs-10">
    <input class="form-control" type="date" value="2011-08-19" id="example-date-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-month-input" class="col-xs-2 form-control-label">Month</label>
  <div class="col-xs-10">
    <input class="form-control" type="month" value="2011-08" id="example-month-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-week-input" class="col-xs-2 form-control-label">Week</label>
  <div class="col-xs-10">
    <input class="form-control" type="week" value="2011-W33" id="example-week-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-time-input" class="col-xs-2 form-control-label">Time</label>
  <div class="col-xs-10">
    <input class="form-control" type="time" value="13:45:00" id="example-time-input">
  </div>
</div>
<div class="form-group row">
  <label for="example-color-input" class="col-xs-2 form-control-label">Color</label>
  <div class="col-xs-10">
    <input class="form-control" type="color" value="#563d7c" id="example-color-input">
  </div>
</div>

Form layouts

Since Bootstrap applies display: block and width: 100% to almost all our form controls, forms will by default stack vertically. Additional classes can be used to vary this layout on a per-form basis.

Form groups

The .form-group class is the easiest way to add some structure to forms. Its only purpose is to provide margin-bottom around a label and control pairing. As a bonus, since it’s a class you can use it with <fieldset>s, <div>s, or nearly any other element.

<form>
  <fieldset class="form-group">
    <label for="formGroupExampleInput">Example label</label>
    <input type="text" class="form-control" id="formGroupExampleInput" placeholder="Example input">
  </fieldset>
  <fieldset class="form-group">
    <label for="formGroupExampleInput2">Another label</label>
    <input type="text" class="form-control" id="formGroupExampleInput2" placeholder="Another input">
  </fieldset>
</form>

Inline forms

Use the .form-inline class to to display a series of labels, form controls, and buttons on a single horizontal row. Form controls within inline forms behave differently:

  • Controls are display: inline-block to provide alignment control via vertical-align and margin.
  • Controls receive width: auto to override the Bootstrap default width: 100%.
  • Controls only appear inline in viewports that are at least 768px wide to account for narrow viewports on mobile devices.

Because of this, you may need to manually address the width and alignment of individual form controls. Lastly, as shown below, you should always include a <label> with each form control.

Visible labels

<form class="form-inline">
  <div class="form-group">
    <label for="exampleInputName2">Name</label>
    <input type="text" class="form-control" id="exampleInputName2" placeholder="Jane Doe">
  </div>
  <div class="form-group">
    <label for="exampleInputEmail2">Email</label>
    <input type="email" class="form-control" id="exampleInputEmail2" placeholder="jane.doe@example.com">
  </div>
  <button type="submit" class="btn btn-primary">Send invitation</button>
</form>

Hidden labels

<form class="form-inline">
  <div class="form-group">
    <label class="sr-only" for="exampleInputEmail3">Email address</label>
    <input type="email" class="form-control" id="exampleInputEmail3" placeholder="Enter email">
  </div>
  <div class="form-group">
    <label class="sr-only" for="exampleInputPassword3">Password</label>
    <input type="password" class="form-control" id="exampleInputPassword3" placeholder="Password">
  </div>
  <div class="checkbox">
    <label>
      <input type="checkbox"> Remember me
    </label>
  </div>
  <button type="submit" class="btn btn-primary">Sign in</button>
</form>
$
.00
<form class="form-inline">
  <div class="form-group">
    <label class="sr-only" for="exampleInputAmount">Amount (in dollars)</label>
    <div class="input-group">
      <div class="input-group-addon">$</div>
      <input type="text" class="form-control" id="exampleInputAmount" placeholder="Amount">
      <div class="input-group-addon">.00</div>
    </div>
  </div>
  <button type="submit" class="btn btn-primary">Transfer cash</button>
</form>

Using the Grid

For more structured form layouts, you can utilize Bootstrap’s predefined grid classes (or mixins). Add the .row class to form groups and use the .col-* classes to specify the width of your labels and controls. To vertically center the labels with the textual inputs—nearly anything with .form-control—use the .form-control-label class.

<form>
  <div class="form-group row">
    <label for="inputEmail3" class="col-sm-2 form-control-label">Email</label>
    <div class="col-sm-10">
      <input type="email" class="form-control" id="inputEmail3" placeholder="Email">
    </div>
  </div>
  <div class="form-group row">
    <label for="inputPassword3" class="col-sm-2 form-control-label">Password</label>
    <div class="col-sm-10">
      <input type="password" class="form-control" id="inputPassword3" placeholder="Password">
    </div>
  </div>
  <div class="form-group row">
    <label class="col-sm-2">Radios</label>
    <div class="col-sm-10">
      <div class="radio">
        <label>
          <input type="radio" name="gridRadios" id="gridRadios1" value="option1" checked>
          Option one is this and that&mdash;be sure to include why it's great
        </label>
      </div>
      <div class="radio">
        <label>
          <input type="radio" name="gridRadios" id="gridRadios2" value="option2">
          Option two can be something else and selecting it will deselect option one
        </label>
      </div>
      <div class="radio disabled">
        <label>
          <input type="radio" name="gridRadios" id="gridRadios3" value="option3" disabled>
          Option three is disabled
        </label>
      </div>
    </div>
  </div>
  <div class="form-group row">
    <label class="col-sm-2">Checkbox</label>
    <div class="col-sm-10">
      <div class="checkbox">
        <label>
          <input type="checkbox"> Check me out
        </label>
      </div>
    </div>
  </div>
  <div class="form-group row">
    <div class="col-sm-offset-2 col-sm-10">
      <button type="submit" class="btn btn-secondary">Sign in</button>
    </div>
  </div>
</form>

Checkboxes and radios

Checkboxes are for selecting one or several options in a list, while radios are for selecting one option from many.

Disabled checkboxes and radios are supported, but to provide a “not-allowed” cursor on hover of the parent <label>, you’ll need to add the .disabled class to the parent .radio, .radio-inline, .checkbox, or .checkbox-inline.

Default (stacked)

<div class="checkbox">
  <label>
    <input type="checkbox" value="">
    Option one is this and that&mdash;be sure to include why it's great
  </label>
</div>
<div class="checkbox disabled">
  <label>
    <input type="checkbox" value="" disabled>
    Option two is disabled
  </label>
</div>

<div class="radio">
  <label>
    <input type="radio" name="exampleRadios" id="exampleRadios1" value="option1" checked>
    Option one is this and that&mdash;be sure to include why it's great
  </label>
</div>
<div class="radio">
  <label>
    <input type="radio" name="exampleRadios" id="exampleRadios2" value="option2">
    Option two can be something else and selecting it will deselect option one
  </label>
</div>
<div class="radio disabled">
  <label>
    <input type="radio" name="exampleRadios" id="exampleRadios3" value="option3" disabled>
    Option three is disabled
  </label>
</div>

Inline

Use the .checkbox-inline or .radio-inline classes on a series of checkboxes or radios for controls that appear on the same line.

<label class="checkbox-inline">
  <input type="checkbox" id="inlineCheckbox1" value="option1"> 1
</label>
<label class="checkbox-inline">
  <input type="checkbox" id="inlineCheckbox2" value="option2"> 2
</label>
<label class="checkbox-inline">
  <input type="checkbox" id="inlineCheckbox3" value="option3"> 3
</label>
<label class="radio-inline">
  <input type="radio" name="inlineRadioOptions" id="inlineRadio1" value="option1"> 1
</label>
<label class="radio-inline">
  <input type="radio" name="inlineRadioOptions" id="inlineRadio2" value="option2"> 2
</label>
<label class="radio-inline">
  <input type="radio" name="inlineRadioOptions" id="inlineRadio3" value="option3"> 3
</label>

Without labels

Should you have no text within the <label>, the input is positioned as you’d expect. Currently only works on non-inline checkboxes and radios.

<div class="checkbox">
  <label>
    <input type="checkbox" id="blankCheckbox" value="option1">
  </label>
</div>
<div class="radio">
  <label>
    <input type="radio" name="blankRadio" id="blankRadio1" value="option1">
  </label>
</div>

Static controls

When you need to place plain text next to a form label within a form, use the .form-control-static class on a <p>.

email@example.com

<form>
  <div class="form-group row">
    <label class="col-sm-2 form-control-label">Email</label>
    <div class="col-sm-10">
      <p class="form-control-static">email@example.com</p>
    </div>
  </div>
  <div class="form-group row">
    <label for="inputPassword" class="col-sm-2 form-control-label">Password</label>
    <div class="col-sm-10">
      <input type="password" class="form-control" id="inputPassword" placeholder="Password">
    </div>
  </div>
</form>

email@example.com

<form class="form-inline">
  <div class="form-group">
    <label class="sr-only">Email</label>
    <p class="form-control-static">email@example.com</p>
  </div>
  <div class="form-group">
    <label for="inputPassword2" class="sr-only">Password</label>
    <input type="password" class="form-control" id="inputPassword2" placeholder="Password">
  </div>
  <button type="submit" class="btn btn-primary">Confirm identity</button>
</form>

Disabled states

Add the disabled boolean attribute on an input to prevent user interactions. Disabled inputs appear lighter and add a not-allowed cursor.

<input class="form-control" id="disabledInput" type="text" placeholder="Disabled input here..." disabled>

Add the disabled attribute to a <fieldset> to disable all the controls within.

<form>
  <fieldset disabled>
    <div class="form-group">
      <label for="disabledTextInput">Disabled input</label>
      <input type="text" id="disabledTextInput" class="form-control" placeholder="Disabled input">
    </div>
    <div class="form-group">
      <label for="disabledSelect">Disabled select menu</label>
      <select id="disabledSelect" class="form-control">
        <option>Disabled select</option>
      </select>
    </div>
    <div class="checkbox">
      <label>
        <input type="checkbox"> Can't check this
      </label>
    </div>
    <button type="submit" class="btn btn-primary">Submit</button>
  </fieldset>
</form>

By default, browsers will treat all native form controls (<input>, <select> and <button> elements) inside a <fieldset disabled> as disabled, preventing both keyboard and mouse interactions on them. However, if your form also includes <a ... class="btn btn-*"> elements, these will only be given a style of pointer-events: none. As noted in the section about disabled state for buttons (and specifically in the sub-section for anchor elements), this CSS property is not yet standardized and isn’t fully supported in Opera 18 and below, or in Internet Explorer 11, and won’t prevent keyboard users from being able to focus or activate these links. So to be safe, use custom JavaScript to disable such links.

Cross-browser compatibility

While Bootstrap will apply these styles in all browsers, Internet Explorer 11 and below don’t fully support the disabled attribute on a <fieldset>. Use custom JavaScript to disable the fieldset in these browsers.

Readonly inputs

Add the readonly boolean attribute on an input to prevent modification of the input’s value. Read-only inputs appear lighter (just like disabled inputs), but retain the standard cursor.

<input class="form-control" type="text" placeholder="Readonly input here…" readonly>

Control sizing

Set heights using classes like .form-control-lg, and set widths using grid column classes like .col-lg-*.

<input class="form-control form-control-lg" type="text" placeholder=".form-control-lg">
<input class="form-control" type="text" placeholder="Default input">
<input class="form-control form-control-sm" type="text" placeholder=".form-control-sm">
<select class="form-control form-control-lg"></select>
<select class="form-control"></select>
<select class="form-control form-control-sm"></select>

Column sizing

Wrap inputs in grid columns, or any custom parent element, to easily enforce desired widths.

<div class="row">
  <div class="col-xs-2">
    <input type="text" class="form-control" placeholder=".col-xs-2">
  </div>
  <div class="col-xs-3">
    <input type="text" class="form-control" placeholder=".col-xs-3">
  </div>
  <div class="col-xs-4">
    <input type="text" class="form-control" placeholder=".col-xs-4">
  </div>
</div>

Help text

No official help text classes exist in Bootstrap 4 (previously we had .help-block in v3), but thanks to our utility classes like .text-muted, you can create much more flexible help text as you need it.

Associating help text with form controls

Help text should be explicitly associated with the form control it relates to using the aria-describedby attribute. This will ensure that assistive technologies – such as screen readers – will announce this help text when the user focuses or enters the control.

Inline text can use any typical inline HTML element (be it a <small>, <span>, or something else).

Must be 8-20 characters long. 
<form class="form-inline">
  <div class="form-group">
    <label for="inputPassword4">Password</label>
    <input type="password" id="inputPassword4" class="form-control" aria-describedby="passwordHelpInline">
    <small id="passwordHelpInline" class="text-muted">
      Must be 8-20 characters long.
    </small>
  </div>
</form>

Block help text—for below inputs or for longer lines of help text—can be easily achieved with a <p>.

Your password must be 8-20 characters long, contain letters and numbers, and must not contain spaces, special characters or emoji. 

<label for="inputPassword5">Password</label>
<input type="password" id="inputPassword5" class="form-control" aria-describedby="passwordHelpBlock">
<p id="passwordHelpBlock" class="text-muted">
  Your password must be 8-20 characters long, contain letters and numbers, and must not contain spaces, special characters or emoji.
</p>

Validation

Bootstrap includes validation styles for danger, warning, and success states on form controls. To use, add .has-warning, .has-danger, or .has-success to the parent element. Any .form-control-label, .form-control, and .text-help within that element will receive the validation styles.

<div class="form-group has-success">
  <label class="form-control-label" for="inputSuccess1">Input with success</label>
  <input type="text" class="form-control form-control-success" id="inputSuccess1">
</div>
<div class="form-group has-warning">
  <label class="form-control-label" for="inputWarning1">Input with warning</label>
  <input type="text" class="form-control form-control-warning" id="inputWarning1">
</div>
<div class="form-group has-danger">
  <label class="form-control-label" for="inputDanger1">Input with danger</label>
  <input type="text" class="form-control form-control-danger" id="inputDanger1">
</div>

<div class="checkbox has-success">
  <label>
    <input type="checkbox" id="checkboxSuccess" value="option1">
    Checkbox with success
  </label>
</div>
<div class="checkbox has-warning">
  <label>
    <input type="checkbox" id="checkboxWarning" value="option1">
    Checkbox with warning
  </label>
</div>
<div class="checkbox has-danger">
  <label>
    <input type="checkbox" id="checkboxDanger" value="option1">
    Checkbox with danger
  </label>
</div>

Custom forms

For even more customization and cross browser consistency, use our completely custom form elements to replace the browser defaults. They’re built on top of semantic and accessible markup, so they’re solid replacements for any default form control.

Checkboxes and radios

Each checkbox and radio is wrapped in a <label> for three reasons:

  • It provides a larger hit areas for checking the control.
  • It provides a helpful and semantic wrapper to help us replace the default <input>s.
  • It triggers the state of the <input> automatically, meaning no JavaScript is required.

We hide the default <input> with opacity and use the .custom-control-indicator to build a new custom form indicator in its place. Unfortunately we can’t build a custom one from just the <input> because CSS’s content doesn’t work on that element.

We use the sibling selector (~) for all our <input> states—like :checked—to properly style our custom form indicator. When combined with the .custom-control-description class, we can also style the text for each item based on the <input>’s state.

In the checked states, we use base64 embedded SVG icons from Open Iconic. This provides us the best control for styling and positioning across browsers and devices.

Checkboxes

<label class="custom-control custom-checkbox">
  <input type="checkbox" class="custom-control-input">
  <span class="custom-control-indicator"></span>
  <span class="custom-control-description">Check this custom checkbox</span>
</label>

Custom checkboxes can also utilize the :indeterminate pseudo class when manually set via JavaScript (there is no available HTML attribute for specifying it).

If you’re using jQuery, something like this should suffice:

$('.your-checkbox').prop('indeterminate', true)

Radios

<label class="custom-control custom-radio">
  <input id="radio1" name="radio" type="radio" class="custom-control-input">
  <span class="custom-control-indicator"></span>
  <span class="custom-control-description">Toggle this custom radio</span>
</label>
<label class="custom-control custom-radio">
  <input id="radio2" name="radio" type="radio" class="custom-control-input">
  <span class="custom-control-indicator"></span>
  <span class="custom-control-description">Or toggle this other custom radio</span>
</label>

Disabled

Custom checkboxes and radios can also be disabled. Add the disabled boolean attribute to the <input> and the custom indicator and label description will be automatically styled.

<label class="custom-control custom-checkbox">
  <input type="checkbox" class="custom-control-input" disabled>
  <span class="custom-control-indicator"></span>
  <span class="custom-control-description">Check this custom checkbox</span>
</label>

<label class="custom-control custom-radio">
  <input id="radio3" name="radioDisabled" type="radio" class="custom-control-input" disabled>
  <span class="custom-control-indicator"></span>
  <span class="custom-control-description">Toggle this custom radio</span>
</label>

Stacked

Custom checkboxes and radios are inline to start. Add a parent with class .custom-controls-stacked to ensure each form control is on separate lines.

<div class="custom-controls-stacked">
  <label class="custom-control custom-radio">
    <input id="radioStacked1" name="radio-stacked" type="radio" class="custom-control-input">
    <span class="custom-control-indicator"></span>
    <span class="custom-control-description">Toggle this custom radio</span>
  </label>
  <label class="custom-control custom-radio">
    <input id="radioStacked2" name="radio-stacked" type="radio" class="custom-control-input">
    <span class="custom-control-indicator"></span>
    <span class="custom-control-description">Or toggle this other custom radio</span>
  </label>
</div>

Select menu

Custom <select> menus need only a custom class, .custom-select to trigger the custom styles.

<select class="custom-select">
  <option selected>Open this select menu</option>
  <option value="1">One</option>
  <option value="2">Two</option>
  <option value="3">Three</option>
</select>

Custom selects degrade nicely in IE9, receiving only a handful of overrides to remove the custom background-image. Multiple selects (e.g., <select multiple>) are not currently supported.

File browser

The file input is the most gnarly of the bunch and require additional JavaScript if you’d like to hook them up with functional Choose file… and selected file name text.

<label class="custom-file">
  <input type="file" id="file" class="custom-file-input">
  <span class="custom-file-control"></span>
</label>

Here’s how it works:

  • We wrap the <input> in a <label> so the custom control properly triggers the file browser.
  • We hide the default file <input> via opacity.
  • We use :after to generate a custom background and directive (Choose file…).
  • We use :before to generate and position the Browse button.
  • We declare a height on the <input> for proper spacing for surrounding content.

In other words, it’s an entirely custom element, all generated via CSS.