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.
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 radios
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.