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<div class="tw:p-6 tw:max-w-7xl tw:mx-auto tw:space-y-8"> <!-- Introductory callout --> <div class="callout"> <p class="tw:mb-1 tw:text-sm tw:font-mono"> <strong>PATTERN NAME:</strong> Form Field<br> <strong>COMPOSES:</strong> .form-label (+ -required / -optional) | .form-control / .form-select / .form-check | .form-text | .invalid-feedback | .valid-feedback </p> <p class="tw:mb-0 tw:text-sm"> One wrapper that groups a field's label, control, helper text and feedback, and carries the validation state <strong>once</strong> — <code>.form-field.is-invalid</code> tints the control and reveals the error, instead of the caller marking every part by hand. Adds <code>.form-field-errors</code> for the several-messages-for-one-field case the design system previously had no shape for. </p> </div> <!-- Default --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Default</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Default:</strong> label + control, no state. A visible <code><label for></code> is always required — never a placeholder standing in for a label. </p> </div> <div class="tw:max-w-md"> <div class="form-field"> <label class="form-label form-label-required" for="ff-name">Child's full name</label> <input type="text" class="form-control" id="ff-name" aria-required="true"> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><div class="form-field"></code><br> <code> <label class="form-label form-label-required" for="ff-name">Child's full name</label></code><br> <code> <input type="text" class="form-control" id="ff-name" aria-required="true"></code><br> <code></div></code> </div> </div> <!-- With helper text --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">With helper text</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Helper text:</strong> <code>.form-text</code> below the control, referenced by the control's <code>aria-describedby</code>. Helper text explains how to answer; it is not an error. </p> </div> <div class="tw:max-w-md"> <div class="form-field"> <label class="form-label" for="ff-dob">Date of birth</label> <input type="date" class="form-control" id="ff-dob" aria-describedby="ff-dob-help"> <p class="form-text" id="ff-dob-help">Use the date on your child's birth certificate.</p> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><input class="form-control" id="ff-dob" aria-describedby="ff-dob-help"></code><br> <code><p class="form-text" id="ff-dob-help">Use the date on your child's birth certificate.</p></code> </div> </div> <!-- Invalid — single error --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Invalid — single error</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Invalid:</strong> <code>.is-invalid</code> goes on the <code>.form-field</code> wrapper. It tints the control's border and reveals the <code>.invalid-feedback</code> line — which stays hidden inside a wrapper that is not marked invalid, so the error text can be server-rendered up front. <code>aria-invalid="true"</code> and <code>aria-describedby</code> stay on the control: those are the accessible name/description contract, not styling, and both the helper text and the error must be referenced when both are present. </p> </div> <div class="tw:max-w-md"> <div class="form-field is-invalid"> <label class="form-label form-label-required" for="ff-email">Email address</label> <input type="email" class="form-control" id="ff-email" value="parent@" aria-required="true" aria-invalid="true" aria-describedby="ff-email-help ff-email-error"> <p class="form-text" id="ff-email-help">We'll send your application updates here.</p> <p class="invalid-feedback" id="ff-email-error">Enter an email address in the format name@example.com.</p> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><div class="form-field is-invalid"></code><br> <code> <input class="form-control" id="ff-email" aria-invalid="true" aria-describedby="ff-email-help ff-email-error"></code><br> <code> <p class="form-text" id="ff-email-help">…</p></code><br> <code> <p class="invalid-feedback" id="ff-email-error">…</p></code><br> <code></div></code> </div> </div> <!-- Invalid — multiple errors --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Invalid — multiple errors</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Multi-error list:</strong> <code>.form-field-errors</code> is a real <code><ul></code> whose <code>id</code> goes in the control's <code>aria-describedby</code>, so a screen reader hears every message, not just the first. Ink and type match <code>.invalid-feedback</code> exactly — one error and three errors must not look like different components. </p> </div> <div class="tw:max-w-md"> <div class="form-field is-invalid"> <label class="form-label form-label-required" for="ff-password">Create a password</label> <input type="password" class="form-control" id="ff-password" value="abc" aria-required="true" aria-invalid="true" aria-describedby="ff-password-help ff-password-errors"> <p class="form-text" id="ff-password-help">You'll use this to check your application later.</p> <ul class="form-field-errors" id="ff-password-errors"> <li>Use at least 8 characters.</li> <li>Include one number.</li> <li>Include one capital letter.</li> </ul> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><ul class="form-field-errors" id="ff-password-errors"></code><br> <code> <li>Use at least 8 characters.</li></code><br> <code></ul></code> </div> </div> <!-- Valid --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Valid</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Valid:</strong> <code>.is-valid</code> on the wrapper tints the control green and reveals <code>.valid-feedback</code>. Use it sparingly — confirm a field the user could reasonably doubt (a postcode that resolved, a reference that was found), not every field they filled in correctly. </p> </div> <div class="tw:max-w-md"> <div class="form-field is-valid"> <label class="form-label" for="ff-postcode">Home postcode</label> <input type="text" class="form-control" id="ff-postcode" value="SW1A 1AA" aria-describedby="ff-postcode-ok"> <p class="valid-feedback" id="ff-postcode-ok">Matched: 12 Example Street, London.</p> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><div class="form-field is-valid"></code> … <code><p class="valid-feedback" id="…">…</p></code> </div> </div> <!-- Disabled --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Disabled</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Disabled:</strong> the wrapper adds nothing — <code>disabled</code> is an attribute on the control and <code>.form-control:disabled</code> already styles it. Say <em>why</em> in the helper text; a control that is dimmed and silent is a dead end for a first-time applicant. </p> </div> <div class="tw:max-w-md"> <div class="form-field"> <label class="form-label" for="ff-school">Second choice school</label> <select class="form-select" id="ff-school" disabled aria-describedby="ff-school-help"> <option>Choose a school…</option> </select> <p class="form-text" id="ff-school-help">Available once you've chosen a first preference.</p> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><select class="form-select" id="ff-school" disabled aria-describedby="ff-school-help"></code> </div> </div> <!-- Checkbox and grouped fields --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Checkbox and grouped choices</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Beyond text inputs:</strong> the wrapper also carries state for <code>.form-check</code> controls — the ring around a required consent checkbox is the most common invalid field these users meet. For a group of choices, put <code>.form-field</code> on a <code><fieldset></code> and the <code>.form-label</code> on its <code><legend></code>, so one error covers the whole group. </p> </div> <div class="tw:max-w-md tw:space-y-4"> <div class="form-field is-invalid"> <div class="form-check"> <input class="form-check-input" type="checkbox" id="ff-consent" aria-invalid="true" aria-describedby="ff-consent-error"> <label class="form-check-label form-label-required" for="ff-consent"> I confirm the information in this application is correct </label> </div> <p class="invalid-feedback" id="ff-consent-error">Confirm the information is correct before submitting.</p> </div> <fieldset class="form-field is-invalid"> <legend class="form-label form-label-required">Which entry year are you applying for?</legend> <div class="form-check"> <input class="form-check-input" type="radio" name="ff-year" id="ff-year-7" aria-describedby="ff-year-error"> <label class="form-check-label" for="ff-year-7">Year 7 (September 2026)</label> </div> <div class="form-check"> <input class="form-check-input" type="radio" name="ff-year" id="ff-year-12" aria-describedby="ff-year-error"> <label class="form-check-label" for="ff-year-12">Year 12 (September 2026)</label> </div> <p class="invalid-feedback" id="ff-year-error">Choose the entry year you're applying for.</p> </fieldset> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><fieldset class="form-field is-invalid"><legend class="form-label">…</legend></code> </div> </div> <!-- Hidden-until-invalid proof --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Feedback is hidden until the wrapper says otherwise</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Why this matters:</strong> <code>.invalid-feedback</code> on its own is visible the moment it is in the DOM — <code>components/form.css</code> gives it an unconditional <code>display: block</code>, and the <code>.is-invalid ~ .invalid-feedback</code> rule that looked like a gate was a no-op. Inside <code>.form-field</code> it is genuinely conditional, so both messages below are in the markup and neither renders. </p> </div> <div class="tw:max-w-md"> <div class="form-field"> <label class="form-label" for="ff-quiet">Middle name</label> <input type="text" class="form-control" id="ff-quiet"> <p class="invalid-feedback" id="ff-quiet-error">This error text is present in the DOM and not shown.</p> <p class="valid-feedback" id="ff-quiet-ok">So is this success text.</p> </div> </div> </div></div>1
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<div class="tw:p-6 tw:max-w-7xl tw:mx-auto tw:space-y-8"> <!-- Introductory callout --> <div class="callout"> <p class="tw:mb-1 tw:text-sm tw:font-mono"> <strong>PATTERN NAME:</strong> Form Field<br> <strong>COMPOSES:</strong> .form-label (+ -required / -optional) | .form-control / .form-select / .form-check | .form-text | .invalid-feedback | .valid-feedback </p> <p class="tw:mb-0 tw:text-sm"> One wrapper that groups a field's label, control, helper text and feedback, and carries the validation state <strong>once</strong> — <code>.form-field.is-invalid</code> tints the control and reveals the error, instead of the caller marking every part by hand. Adds <code>.form-field-errors</code> for the several-messages-for-one-field case the design system previously had no shape for. </p> </div> <!-- Default --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Default</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Default:</strong> label + control, no state. A visible <code><label for></code> is always required — never a placeholder standing in for a label. </p> </div> <div class="tw:max-w-md"> <div class="form-field"> <label class="form-label form-label-required" for="ff-name">Child's full name</label> <input type="text" class="form-control" id="ff-name" aria-required="true"> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><div class="form-field"></code><br> <code> <label class="form-label form-label-required" for="ff-name">Child's full name</label></code><br> <code> <input type="text" class="form-control" id="ff-name" aria-required="true"></code><br> <code></div></code> </div> </div> <!-- With helper text --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">With helper text</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Helper text:</strong> <code>.form-text</code> below the control, referenced by the control's <code>aria-describedby</code>. Helper text explains how to answer; it is not an error. </p> </div> <div class="tw:max-w-md"> <div class="form-field"> <label class="form-label" for="ff-dob">Date of birth</label> <input type="date" class="form-control" id="ff-dob" aria-describedby="ff-dob-help"> <p class="form-text" id="ff-dob-help">Use the date on your child's birth certificate.</p> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><input class="form-control" id="ff-dob" aria-describedby="ff-dob-help"></code><br> <code><p class="form-text" id="ff-dob-help">Use the date on your child's birth certificate.</p></code> </div> </div> <!-- Invalid — single error --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Invalid — single error</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Invalid:</strong> <code>.is-invalid</code> goes on the <code>.form-field</code> wrapper. It tints the control's border and reveals the <code>.invalid-feedback</code> line — which stays hidden inside a wrapper that is not marked invalid, so the error text can be server-rendered up front. <code>aria-invalid="true"</code> and <code>aria-describedby</code> stay on the control: those are the accessible name/description contract, not styling, and both the helper text and the error must be referenced when both are present. </p> </div> <div class="tw:max-w-md"> <div class="form-field is-invalid"> <label class="form-label form-label-required" for="ff-email">Email address</label> <input type="email" class="form-control" id="ff-email" value="parent@" aria-required="true" aria-invalid="true" aria-describedby="ff-email-help ff-email-error"> <p class="form-text" id="ff-email-help">We'll send your application updates here.</p> <p class="invalid-feedback" id="ff-email-error">Enter an email address in the format name@example.com.</p> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><div class="form-field is-invalid"></code><br> <code> <input class="form-control" id="ff-email" aria-invalid="true" aria-describedby="ff-email-help ff-email-error"></code><br> <code> <p class="form-text" id="ff-email-help">…</p></code><br> <code> <p class="invalid-feedback" id="ff-email-error">…</p></code><br> <code></div></code> </div> </div> <!-- Invalid — multiple errors --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Invalid — multiple errors</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Multi-error list:</strong> <code>.form-field-errors</code> is a real <code><ul></code> whose <code>id</code> goes in the control's <code>aria-describedby</code>, so a screen reader hears every message, not just the first. Ink and type match <code>.invalid-feedback</code> exactly — one error and three errors must not look like different components. </p> </div> <div class="tw:max-w-md"> <div class="form-field is-invalid"> <label class="form-label form-label-required" for="ff-password">Create a password</label> <input type="password" class="form-control" id="ff-password" value="abc" aria-required="true" aria-invalid="true" aria-describedby="ff-password-help ff-password-errors"> <p class="form-text" id="ff-password-help">You'll use this to check your application later.</p> <ul class="form-field-errors" id="ff-password-errors"> <li>Use at least 8 characters.</li> <li>Include one number.</li> <li>Include one capital letter.</li> </ul> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><ul class="form-field-errors" id="ff-password-errors"></code><br> <code> <li>Use at least 8 characters.</li></code><br> <code></ul></code> </div> </div> <!-- Valid --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Valid</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Valid:</strong> <code>.is-valid</code> on the wrapper tints the control green and reveals <code>.valid-feedback</code>. Use it sparingly — confirm a field the user could reasonably doubt (a postcode that resolved, a reference that was found), not every field they filled in correctly. </p> </div> <div class="tw:max-w-md"> <div class="form-field is-valid"> <label class="form-label" for="ff-postcode">Home postcode</label> <input type="text" class="form-control" id="ff-postcode" value="SW1A 1AA" aria-describedby="ff-postcode-ok"> <p class="valid-feedback" id="ff-postcode-ok">Matched: 12 Example Street, London.</p> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><div class="form-field is-valid"></code> … <code><p class="valid-feedback" id="…">…</p></code> </div> </div> <!-- Disabled --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Disabled</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Disabled:</strong> the wrapper adds nothing — <code>disabled</code> is an attribute on the control and <code>.form-control:disabled</code> already styles it. Say <em>why</em> in the helper text; a control that is dimmed and silent is a dead end for a first-time applicant. </p> </div> <div class="tw:max-w-md"> <div class="form-field"> <label class="form-label" for="ff-school">Second choice school</label> <select class="form-select" id="ff-school" disabled aria-describedby="ff-school-help"> <option>Choose a school…</option> </select> <p class="form-text" id="ff-school-help">Available once you've chosen a first preference.</p> </div> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><select class="form-select" id="ff-school" disabled aria-describedby="ff-school-help"></code> </div> </div> <!-- Checkbox and grouped fields --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Checkbox and grouped choices</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Beyond text inputs:</strong> the wrapper also carries state for <code>.form-check</code> controls — the ring around a required consent checkbox is the most common invalid field these users meet. For a group of choices, put <code>.form-field</code> on a <code><fieldset></code> and the <code>.form-label</code> on its <code><legend></code>, so one error covers the whole group. </p> </div> <div class="tw:max-w-md tw:space-y-4"> <div class="form-field is-invalid"> <div class="form-check"> <input class="form-check-input" type="checkbox" id="ff-consent" aria-invalid="true" aria-describedby="ff-consent-error"> <label class="form-check-label form-label-required" for="ff-consent"> I confirm the information in this application is correct </label> </div> <p class="invalid-feedback" id="ff-consent-error">Confirm the information is correct before submitting.</p> </div> <fieldset class="form-field is-invalid"> <legend class="form-label form-label-required">Which entry year are you applying for?</legend> <div class="form-check"> <input class="form-check-input" type="radio" name="ff-year" id="ff-year-7" aria-describedby="ff-year-error"> <label class="form-check-label" for="ff-year-7">Year 7 (September 2026)</label> </div> <div class="form-check"> <input class="form-check-input" type="radio" name="ff-year" id="ff-year-12" aria-describedby="ff-year-error"> <label class="form-check-label" for="ff-year-12">Year 12 (September 2026)</label> </div> <p class="invalid-feedback" id="ff-year-error">Choose the entry year you're applying for.</p> </fieldset> </div> <div class="tw:mt-4 tw:text-sm tw:text-gray-600"> <code><fieldset class="form-field is-invalid"><legend class="form-label">…</legend></code> </div> </div> <!-- Hidden-until-invalid proof --> <div class="tw:border-t tw:pt-6"> <h2 class="h4 tw:mb-4">Feedback is hidden until the wrapper says otherwise</h2> <div class="callout tw:mb-4"> <p class="tw:mb-0 tw:text-sm"> <strong>Why this matters:</strong> <code>.invalid-feedback</code> on its own is visible the moment it is in the DOM — <code>components/form.css</code> gives it an unconditional <code>display: block</code>, and the <code>.is-invalid ~ .invalid-feedback</code> rule that looked like a gate was a no-op. Inside <code>.form-field</code> it is genuinely conditional, so both messages below are in the markup and neither renders. </p> </div> <div class="tw:max-w-md"> <div class="form-field"> <label class="form-label" for="ff-quiet">Middle name</label> <input type="text" class="form-control" id="ff-quiet"> <p class="invalid-feedback" id="ff-quiet-error">This error text is present in the DOM and not shown.</p> <p class="valid-feedback" id="ff-quiet-ok">So is this success text.</p> </div> </div> </div></div>No notes provided.
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