Input Groups

To let the Select2-widget know if any elements are directly being appended, prepended or both in the context of a Bootstrap input group, add .select2-bootstrap-prepend and/or .select2-bootstrap-append to the .input-group wrapper element to address the corresponding border-radii.

Control sizing

Example block-level help text here.

Button Addons

Disabled inputs

Bootstrap is a front-end framework for fast, sleek, and mobile-first web development.
Select2 is a jQuery based replacement for select boxes.