Place one add-on or button on either side of an input. You may also place one on both sides of an input. Remember to place <label>s outside the input group.

While multiple <input>s are supported visually, validation styles are only available for input groups with a single <input>.

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.

Place any checkbox or radio option within an input group’s addon instead of text. We recommend adding .mt-0 to the .form-check-input when there’s no visible text next to the input.

Multiple add-ons are supported and can be mixed with checkbox and radio input versions.