Individual form controls automatically receive some global styling. All textual
<input>, <textarea>, and <select>
elements with .form-control are set to width: 100%; by default.
Wrap labels and controls in .form-group for optimum spacing.
Don't mix form groups with input groups
Do not mix form groups directly with input groups.
Instead, nest the input group inside of the form group.
~~~ html
~~~
Inline form
Add .form-inline to your form (which doesn't have to be a
<form>) for left-aligned and inline-block controls. This only applies to forms within viewports that are at least 768px wide.
May require custom widths
Inputs and selects have `width: 100%;` applied by default in Bootstrap. Within inline forms, we reset that to `width: auto;` so multiple controls can reside on the same line. Depending on your layout, additional custom widths may be required.
Always add labels
Screen readers will have trouble with your forms if you don't include a label for every input. For these inline forms, you can hide the labels using the `.sr-only` class. There are further alternative methods of providing a label for assistive technologies, such as the `aria-label`, `aria- labelledby` or `title` attribute. If none of these is present, screen readers may resort to using the `placeholder` attribute, if present, but note that use of `placeholder` as a replacement for other labelling methods is not advised.
~~~ html
~~~
Inline form with checkboxes
~~~ html
~~~
Inline form with input group
~~~ html
~~~
Horizontal form
Not Recommended
BookingSync UI Kit does not recommend using horizontal forms.
Inputs
Most common form control, text-based input fields. Includes support for all HTML5 types:
text, password, datetime, datetime-local,
date, month, time, week,
number, email, url, search,
tel, and color.
Type declaration required
Inputs will only be fully styled if their `type` is properly declared.
Form control which supports multiple lines of text.
Change rows attribute as necessary.
~~~ html
~~~
Checkboxes and radios (stacked)
Checkboxes are for selecting one or several options in a list, while radios are for
selecting one option from many.
Disabled checkboxes and radios
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.
~~~ html
~~~
Inline checkboxes and radios
Use the .checkbox-inline or .radio-inline classes on a series of
checkboxes or radios for controls that appear on the same line.
~~~ html
~~~
Checkboxes and radios without label text
Should you have no text within the <label>, the input is positioned as
you'd expect. Remember to still provide some form of label for assistive technologies
(for instance, using aria-label).
Limitation
Currently only works on non-inline checkboxes and radios.
~~~ html
~~~
Select
Note that many native select menus—namely in Safari and Chrome—have rounded corners that
cannot be modified via border-radius properties.
Chosen
Using Chosen is recommended for a better design and improved experience. More details in
the Chosen component.
~~~ html
~~~
Multiple Select
For <select> controls with the multiple attribute,
multiple options are shown by default.
Chosen
Using Chosen is recommended for a better design and improved experience. More details in
the Chosen component.
~~~ html
~~~
Static control
When you need to place plain text next to a form label within a form, use the
.form-control-static class on a <p>.
~~~ html
~~~
Focus state
We remove the default outline styles on some form controls and adjust labels
and border-bottom placement and color for :focus.
Demo :focus state
The above example forces the focused class normally set by javascript on the
.form-group parent to demonstrate the :focus state on a
.form-group .form-control.
~~~ html
~~~
Filled state
Demo filled state
The above example forces the filled class normally set by javascript on the
.form-froup parent to demonstrate the filled state on a
.form-group .form-control.
~~~ html
~~~
Disabled state
Add the disabled boolean attribute on an input to prevent user interactions.
Disabled inputs appear lighter and add a not-allowed cursor.
~~~ html
~~~
Disabled fieldsets
Add the disabled attribute to a <fieldset> to disable all
the controls within the <fieldset> at once.
Caveat about link functionality of <a>
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.
~~~ html
~~~
Readonly state
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.
~~~ html
~~~
Help text
Block level help text for form controls.
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.
~~~ html
...
A block of help text that breaks onto a new line and may extend beyond one line.
~~~
Validation states
Bootstrap includes validation styles for error, warning, and success states on form controls.
To use, add .has-warning, .has-error, or .has-success
to the parent element. Any .control-label, .form-control, and
.help-block within that element will receive the validation styles.
~~~ html
A block of help text that breaks onto a new line and may extend beyond one line.
~~~
Validation with optional icons
You can also add optional feedback icons with the addition of .has-feedback
and the right icon.
Requirements
Feedback icons only work with textual <input class="form-control">
elements.
Icons, labels, and input groups
Manual positioning of feedback icons is required for inputs without a label and for
input groups with an add-on on the right. You are strongly
encouraged to provide labels for all inputs for accessibility reasons. If you wish to prevent
labels from being displayed, hide them with the .sr-only class. If you must do
without labels, adjust the top value of the feedback icon. For input groups,
adjust the right value to an appropriate pixel value depending on the width of
your addon.
~~~ html
(success)
(warning)
(error)
@
(success)
~~~
Validation with optional icons in horizontal and inline forms
Not Recommended
BookingSync UI Kit does not recommend using horizontal forms.
~~~ html
~~~
Input group with icon
Add icon to input field adding class .has-icon to the .form-group.
Create bigger or smaller icons using classes like .icon--lg. Use these classes
in conjunction with .input-lg for the input field for example to match its height.
~~~ html
~~~
Height sizing
Set heights using classes like .input-lg. Create taller or shorter form
controls that match button sizes.
~~~ html
~~~
Horizontal form group sizes
Not Recommended
BookingSync UI Kit does not recommend using horizontal forms.
Column sizing
Set widths using grid column classes like .col-lg-*. Wrap inputs in grid columns,
or any custom parent element, to easily enforce desired widths.