app/views/devise/passwords/edit.html.erb
<div class="page-header">
<h1>パスワードのリセット</h1>
</div>
<%= form_for(resource,
as: resource_name,
url: password_path(resource_name),
html: { method: :put, class: 'form-horizontal' }
) do |f| %>
<%= render partial: 'shared/form_error', locals: { object: resource } %>
<%= f.hidden_field :reset_password_token %>
<div class="form-group">
<%= f.label :password,
'新しいパスワード',
class: 'control-label col-sm-2' %>
<div class="col-sm-4">
<%= f.password_field :password,
autocomplete: "off",
class: 'form-control' %>
</div>
</div>
<div class="form-group">
<%= f.label :password_confirmation,
'確認入力',
class: 'control-label col-sm-2' %>
<div class="col-sm-4">
<%= f.password_field :password_confirmation,
autocomplete: "off",
class: 'form-control' %>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<%= f.submit '変更', class: 'btn btn-primary btn-sm' %>
</div>
</div>
<% end %>
<%= render "devise/shared/links" %>