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.
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.
Checkboxes and radio addons
Place any checkbox or radio option within an input group’s addon instead of text.
Multiple add-ons are supported and can be mixed with checkbox and radio input versions.
Buttons in input groups are a bit different and require one extra level of nesting. Instead of .input-group-addon, you’ll need to use .input-group-btn to wrap the buttons. This is required due to default browser styles that cannot be overridden.
Inputs can also be placed in headers, along with buttons to submit or cancel the form.
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, aria-labelledby, aria-describedby, title or placeholder attribute) 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.