* Wrap labels and controls in `<div class="form-group">` for optimum spacing.
* The following theme classes can be applied to the `<form>` or `<div class="form-group">` tags: `.theme-default`, `.theme-alt` or `.theme-dark`. Note: if `<button>` is inside `<form>` or `.form-group`, it does not automatically inherit the theme class.
See documentation on [Buttons](./controls.html#buttons) for applying theme classes.
* The `disabled` attribute can be applied to the `<input>` tags for all the form controls above.
* To get an indeterminate checkbox, apply the `.checkbox-indeterminate` class to the `<input type="checkbox">` tag along with the required JavaScript.
* The `checked` attribute is placed within the input tag of either checkbox or radio to indicate the it is pre-selected.