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Components

Form

A way to build structured forms.

Full support Supported since v105. Full support Supported since v121. Full support Supported since v15.4.

Usage

<form class="ui-form">
  <fieldset class="ui-fieldset">
    <legend><!-- --></legend>
    <p class="ui-field-description"><!-- --></p>


    <div class="ui-field-group" role="group">
      <!-- form fields -->
    </div>


    <div class="ui-field-group" role="group">
      <!-- form fields -->
    </div>
  </fieldset>
</form>


<!-- or -->


<div class="ui-form">
  <div class="ui-fieldset">
    <p class="ui-legend"><!-- --></p>
    <p class="ui-field-description"><!-- --></p>


    <div class="ui-field-group" role="group">
      <!-- form fields -->
    </div>
    <div class="ui-field-group" role="group">
      <!-- form fields -->
    </div>
  </div>
</div>

Non-semantic elements

Sometimes you can't use semantic form elements like <fieldset> and <legend>. Replace them with <div role="group"> paired with a <span class="ui-legend"> (or any heading) to keep the visual treatment without the native semantics.

Fieldset

Used to show a relationship between form elements.

<legend>
to describe what it's about.
.ui-field-description(optional)
to give extra context about the fieldset.
.ui-field-group
groups related fields.
Favorite Pet

Please select your favorite type of pet.

<fieldset class="ui-fieldset">
  <legend>Favorite Pet</legend>
  <p class="ui-field-description">Please select your favorite type of pet.</p>
  <div class="ui-field-group" role="group">
    <label class="ui-radio">
      <input name="pet" type="radio" value="dog" />
      <span class="ui-label">Dog</span>
    </label>
    <label class="ui-radio">
      <input name="pet" type="radio" value="cat" />
      <span class="ui-label">Cat</span>
    </label>
    <label class="ui-radio">
      <input name="pet" type="radio" value="hamster" />
      <span class="ui-label">Hamster</span>
    </label>
  </div>
</fieldset>

Required

Pet info

We must know your pet's information.

<fieldset class="ui-fieldset">
  <legend>Pet info</legend>
  <p class="ui-field-description">We must know your pet's information.</p>
  <div class="ui-field-group" role="group">
    <label class="ui-text-field">
      <span class="ui-label">Name</span>
      <span class="ui-field">
        <input type="text" name="name" />
      </span>
    </label>
    <label class="ui-textarea">
      <span class="ui-label">Life story</span>
      <span class="ui-field">
        <textarea name="bio" required></textarea>
      </span>
    </label>
  </div>
</fieldset>

Disabled

Turns out you can disable an entire fieldset.

Pet dating

You can't change these settings

<fieldset class="ui-fieldset" disabled>
  <legend>Pet dating</legend>
  <p class="ui-field-description">You can't change these settings</p>
  <div class="ui-field-group" role="group">
    <label class="ui-checkbox">
      <input
        checked
        name="notifications"
        type="checkbox"
        value="horse-tinder"
      />
      <span class="ui-label">Horse Tinder</span>
    </label>
    <label class="ui-checkbox">
      <input
        name="notifications"
        type="checkbox"
        value="onlyhorsefans"
        checked
      />
      <span class="ui-label">OnlyHorseFans</span>
    </label>
  </div>
</fieldset>

Field Legend

Use FieldLegend (or <legend>) to describe the fieldset.

Legend 
<fieldset class="ui-fieldset">
  <legend>Legend</legend>
</fieldset>

Field Description

Use FieldDescription (or .ui-field-description) to give extra context about the fieldset.

Legend

This is a field description.

<fieldset class="ui-fieldset">
  <legend>Legend</legend>
  <p class="ui-field-description">This is a field description.</p>
</fieldset>

Field Group

Use .ui-field-group to wrap related fields.

Choose your favorite Radiohead album

There are no wrong answers.

Which side projects do you follow?

Some are better than others.

<form class="ui-form">
  <fieldset class="ui-fieldset">
    <legend>Choose your favorite Radiohead album</legend>
    <p class="ui-field-description">There are no wrong answers.</p>
    <div class="ui-field-group" role="group">
      <label class="ui-radio">
        <input type="radio" name="albums" value="ok-computer" />
        <span class="ui-label">OK Computer</span>
      </label>
      <label class="ui-radio">
        <input type="radio" name="albums" value="kid-a" />
        <span class="ui-label">Kid A</span>
      </label>
      <label class="ui-radio">
        <input type="radio" name="albums" value="in-rainbows" />
        <span class="ui-label">In Rainbows</span>
      </label>
      <label class="ui-radio">
        <input type="radio" name="albums" value="the-king-of-limbs" />
        <span class="ui-label">The King of Limbs</span>
      </label>
    </div>
  </fieldset>


  <fieldset class="ui-fieldset">
    <legend>Which side projects do you follow?</legend>
    <p class="ui-field-description">Some are better than others.</p>
    <div class="ui-field-group" role="group">
      <label class="ui-checkbox">
        <input type="checkbox" name="projects" value="the-smile" />
        <span class="ui-label">The Smile</span>
        <span class="ui-end-text"
          >Thom Yorke, Jonny Greenwood, Tom Skinner</span
        >
      </label>
      <label class="ui-checkbox">
        <input type="checkbox" name="projects" value="atoms-for-peace" />
        <span class="ui-label">Atoms for Peace</span>
        <span class="ui-end-text">Thom Yorke, Flea, Nigel Godrich</span>
      </label>
      <label class="ui-checkbox">
        <input type="checkbox" name="projects" value="eob" />
        <span class="ui-label">EOB</span>
        <span class="ui-end-text">Ed O'Brien solo</span>
      </label>
      <label class="ui-checkbox">
        <input type="checkbox" name="projects" value="jonny-scores" />
        <span class="ui-label">Film Scores</span>
        <span class="ui-end-text">Film compositions by Jonny Greenwood</span>
      </label>
      <label class="ui-checkbox">
        <input type="checkbox" name="projects" value="selway-solo" />
        <span class="ui-label">Philip Selway</span>
        <span class="ui-end-text">Philip Selway solo albums</span>
      </label>
    </div>
  </fieldset>
</form>

Row

Use the .ui-row class to lay out fields horizontally.

Options 
<form class="ui-form">
  <fieldset class="ui-fieldset">
    <legend>Options</legend>
    <div class="ui-field-group ui-row">
      <label class="ui-checkbox">
        <input type="checkbox" />
        <span class="ui-label">Option 1</span>
      </label>
      <label class="ui-checkbox">
        <input type="checkbox" />
        <span class="ui-label">Option 2</span>
      </label>
      <label class="ui-checkbox">
        <input type="checkbox" />
        <span class="ui-label">Option 3</span>
      </label>
    </div>
  </fieldset>
</form>

Divider

Use a <hr /> to create a visual break between sections of your form.

Post Content 
<form class="ui-form">
  <fieldset class="ui-fieldset">
    <legend>Post Content</legend>
    <div class="ui-field-group" role="group">
      <label class="ui-text-field">
        <span class="ui-label">Title</span>
        <span class="ui-field">
          <input name="New post" placeholder="My new post" type="text" />
        </span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <div class="ui-field-group" role="group">
    <button class="ui-button ui-filled">Publish</button>
  </div>
</form>

Kitchen Sink

Everything all at once.

User Profile

Please provide your basic contact details.

Notifications

Configure how you want to receive updates.

Theme Preference

Select your preferred visual style.

Experience Level

How many years of experience do you have?

Additional Info

Anything else we should know?

Legal 
<form class="ui-form" id="kitchen-sink-example-html">
  <fieldset class="ui-fieldset">
    <legend>User Profile</legend>
    <p class="ui-field-description">
      Please provide your basic contact details.
    </p>
    <div class="ui-field-group" role="group">
      <label class="ui-text-field">
        <span class="ui-label">Full Name</span>
        <span class="ui-field">
          <input type="text" placeholder="Jane Doe" required />
        </span>
      </label>
      <label class="ui-text-field">
        <span class="ui-label">Email Address</span>
        <span class="ui-field">
          <input type="email" placeholder="jane@example.com" required />
        </span>
      </label>
      <label class="ui-select">
        <span class="ui-label">Role</span>
        <span class="ui-field">
          <select>
            <button>
              <selectedcontent></selectedcontent>
            </button>
            <div class="ui-list">
              <option value="dev">Developer</option>
              <option value="design">Designer</option>
              <option value="manager">Manager</option>
            </div>
          </select>
        </span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Notifications</legend>
    <p class="ui-field-description">
      Configure how you want to receive updates.
    </p>
    <div class="ui-field-group" role="group">
      <label class="ui-switch">
        <input type="checkbox" role="switch" name="email_notifs" checked />
        <span class="ui-label">Email Notifications</span>
      </label>
      <label class="ui-switch">
        <input type="checkbox" role="switch" name="sms_notifs" />
        <span class="ui-label">SMS Notifications</span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Theme Preference</legend>
    <p class="ui-field-description">Select your preferred visual style.</p>
    <div class="ui-field-group">
      <label class="ui-radio">
        <input type="radio" name="theme" value="light" checked />
        <span class="ui-label">Light Theme</span>
      </label>
      <label class="ui-radio">
        <input type="radio" name="theme" value="dark" />
        <span class="ui-label">Dark Theme</span>
      </label>
      <label class="ui-radio">
        <input type="radio" name="theme" value="system" />
        <span class="ui-label">System Default</span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Experience Level</legend>
    <p class="ui-field-description">
      How many years of experience do you have?
    </p>
    <div class="ui-field-group" role="group">
      <label class="ui-range">
        <span class="ui-label">Professional Experience</span>
        <span class="ui-start-text"
          >Drag the slider to match your total tenure.</span
        >
        <input type="range" min="0" max="20" step="1" value="5" />
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Additional Info</legend>
    <p class="ui-field-description">Anything else we should know?</p>
    <div class="ui-field-group" role="group">
      <label class="ui-textarea">
        <span class="ui-label">Biography</span>
        <span class="ui-field">
          <textarea placeholder="Tell us about yourself..." rows="4"></textarea>
        </span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Legal</legend>
    <div class="ui-field-group" role="group">
      <label class="ui-checkbox">
        <input type="checkbox" name="terms" required />
        <span class="ui-label">I agree to the terms and conditions</span>
        <span class="ui-end-text">Support this text</span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <div class="ui-field-group" role="group">
    <button class="ui-button ui-filled" type="submit">Send</button>
    <button class="ui-button">Cancel</button>
  </div>
</form>

Row

Everything all at once, but horizontally.

User Profile

Please provide your basic contact details.

Notifications

Configure how you want to receive updates.

Theme Preference

Select your preferred visual style.

Experience Level

How many years of experience do you have?

Additional Info

Anything else we should know?

Legal 
<form class="ui-form" id="kitchen-sink-example-row-html">
  <fieldset class="ui-fieldset">
    <legend>User Profile</legend>
    <p class="ui-field-description">
      Please provide your basic contact details.
    </p>
    <div class="ui-field-group" role="group">
      <label class="ui-text-field ui-spread">
        <span class="ui-label">Full Name</span>
        <span class="ui-field">
          <input type="text" placeholder="Jane Doe" required />
        </span>
      </label>
      <label class="ui-text-field ui-spread">
        <span class="ui-label">Email Address</span>
        <span class="ui-field">
          <input type="email" placeholder="jane@example.com" required />
        </span>
      </label>
      <label class="ui-select ui-spread">
        <span class="ui-label">Role</span>
        <span class="ui-field">
          <select>
            <button>
              <selectedcontent></selectedcontent>
            </button>
            <div class="ui-list">
              <option value="dev">Developer</option>
              <option value="design">Designer</option>
              <option value="manager">Manager</option>
            </div>
          </select>
        </span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Notifications</legend>
    <p class="ui-field-description">
      Configure how you want to receive updates.
    </p>
    <div class="ui-field-group" role="group">
      <label class="ui-switch ui-spread">
        <input type="checkbox" role="switch" name="email_notifs" checked />
        <span class="ui-label">Email Notifications</span>
      </label>
      <label class="ui-switch ui-spread">
        <input type="checkbox" role="switch" name="sms_notifs" />
        <span class="ui-label">SMS Notifications</span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Theme Preference</legend>
    <p class="ui-field-description">Select your preferred visual style.</p>
    <div class="ui-field-group ui-row">
      <label class="ui-radio">
        <input type="radio" name="theme" value="light" checked />
        <span class="ui-label">Light Theme</span>
      </label>
      <label class="ui-radio">
        <input type="radio" name="theme" value="dark" />
        <span class="ui-label">Dark Theme</span>
      </label>
      <label class="ui-radio">
        <input type="radio" name="theme" value="system" />
        <span class="ui-label">System Default</span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Experience Level</legend>
    <p class="ui-field-description">
      How many years of experience do you have?
    </p>
    <div class="ui-field-group" role="group">
      <label class="ui-range ui-spread">
        <span class="ui-label">Professional Experience</span>
        <span class="ui-start-text"
          >Drag the slider to match your total tenure.</span
        >
        <input type="range" min="0" max="20" step="1" value="5" />
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Additional Info</legend>
    <p class="ui-field-description">Anything else we should know?</p>
    <div class="ui-field-group" role="group">
      <label class="ui-textarea ui-spread">
        <span class="ui-label">Biography</span>
        <span class="ui-field">
          <textarea placeholder="Tell us about yourself..." rows="4"></textarea>
        </span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <fieldset class="ui-fieldset">
    <legend>Legal</legend>
    <div class="ui-field-group" role="group">
      <label class="ui-checkbox ui-spread">
        <input type="checkbox" name="terms" required />
        <span class="ui-label">I agree to the terms and conditions</span>
        <span class="ui-end-text">Support this text</span>
      </label>
    </div>
  </fieldset>


  <hr class="ui-divider" />


  <div class="ui-field-group" role="group">
    <button class="ui-button ui-filled" type="submit">Send</button>
    <button class="ui-button">Cancel</button>
  </div>
</form>

API

Form

Type Modifiers Default Description
Base .ui-form - The main form container.

FieldSet

Type Modifiers Default Description
Base .ui-fieldset - The field set container.
Modifiers [disabled] - Whether the field set is disabled.

FieldLegend

Type Modifiers Default Description
Base .ui-legend, legend - The label for the field set.

Field description

Type Modifiers Default Description
Base .ui-field-description - Field description for the field set.

FieldGroup

Type Modifiers Default Description
Base .ui-field-group - Container for related input components.
Variants .ui-row, default - The orientation of the field group.

Browser support

Full support Supported since v105. Full support Supported since v121. Full support Supported since v15.4.

See also the full browser support guide.

Installation

This doesn't include all the styles for all form elements, just the scaffolding around them.

See also

@layer components.extended {
  /* Form */
  :where(.ui-form) {
    display: grid;
    gap: var(--size-8);


    hr {
      margin-block: 0;
    }
  }


  /* Fieldset */
  :where(.ui-fieldset) {
    all: unset;
    border: 0;
    border-radius: 0;
    display: grid;
    gap: var(--size-1);
    margin: 0;
    min-inline-size: 0;
    padding: 0;


    /* Legend */
    :where(legend, .ui-legend) {
      all: unset;
      color: var(--text-primary);
      font-weight: 600;
      margin-block-end: var(--size-3);
      padding: 0;


      &:has(+ :where(.ui-field-description)) {
        margin-block-end: 0;
      }
    }


    /* Field description / supporting text */
    :where(.ui-field-description) {
      color: var(--text-muted);
      font-size: var(--font-size-05);
      line-height: var(--font-lineheight-3);


      &:has(+ *) {
        margin-block-end: var(--size-3);
      }
    }


    /* End text */
    :where(.ui-end-text) {
      color: var(--text-muted);
      font-size: var(--font-size-0);
      line-height: var(--font-lineheight-3);
    }


    &:has(.ui-text-field.ui-row) {
      row-gap: var(--size-7);
    }


    /* Disabled */
    &[disabled] {
      opacity: 0.64;
      user-select: none;


      input,
      label,
      .ui-label {
        cursor: not-allowed;
      }
    }


    /* Error / validation */
    &[data-invalid] {
      :where(.ui-end-text) {
        color: var(--critical);
      }


      :where(.ui-checkbox, .ui-radio, .ui-switch) {
        --primary: var(--critical);


        :where(.ui-end-text) {
          color: var(--critical);
        }
      }


      :where(.ui-switch) {
        input {
          border-radius: var(--radius-round);
          outline: 2px solid var(--critical);
        }
      }
    }


    /* Required */
    &:has(:invalid) {
      :where(legend, .ui-legend) {
        padding-inline-end: 1ex;
        position: relative;


        &::after {
          color: var(--red);
          content: "*";
          inset: 0 -0.25ex auto auto;
          position: absolute;
        }
      }
    }
  }


  /* Field group */
  :where(.ui-field-group) {
    display: flex;
    flex-direction: column;
    gap: var(--size-4);


    /* If it only has checkboxes, radios, or switches */
    &:has(> :where(.ui-checkbox, .ui-radio, .ui-switch)):not(
        :has(> :not(.ui-checkbox, .ui-radio, .ui-switch))
      ) {
      gap: var(--size-2);
    }


    /* If it only has buttons */
    &:has(.ui-button):not(:has(*:not(.ui-button))) {
      align-items: center;
      flex-direction: row;
      gap: var(--size-2);


      /* If it's not preceeded by an hr */
      &:not(hr + &) {
        margin-block-start: var(--size-4);
      }
    }


    & + & {
      margin-block-start: var(--size-5);
    }


    /* Directions */
    &.ui-row {
      flex-direction: row;
      flex-wrap: wrap;


      &:has(> :where(.ui-checkbox, .ui-radio, .ui-switch)) {
        gap: var(--size-4);
      }
    }
  }
}