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Be sure to have a copy of the Bootstrap stylesheet available on your
application, you can get it on http://getbootstrap.com/2.3.2/.
Inside your views, use the 'simple_form_for' with one of the Bootstrap form
classes, '.form-horizontal', '.form-inline', '.form-search' or
'.form-vertical', as the following:
= simple_form_for(@user, html: {class: 'form-horizontal' }) do |form|
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