<% params_prefix = "payment_source[#{payment_method.id}]" %>

<%= image_tag('smspay-logo.png', width: 75) %>

<p class="field" data-hook="smspay_phone_number">
  <%= label_tag "Phone", Spree.t(:mobile_number, :scope => 'smspay') %><span class="required">*</span>
  <%= select_tag "#{params_prefix}[code]", options_for_select([
    ['+47', 47],
    ['+40', 40],
    ['+46', 46],
    ['+351', 35]
  ]) %>
  <%= text_field_tag "#{params_prefix}[number]" %>
</p>

<% params_prefix = "payment_source[#{payment_method.id}]" %>

<div class="well clearfix form-inline">

  <%= image_tag('smspay-logo.png', width: 75) %>

  <p class="field" data-hook="smspay_phone_number">
    <%= label_tag "Phone", Spree.t(:mobile_number, :scope => 'smspay') %><span class="required">*</span>
    <%= select_tag "#{params_prefix}[code]", options_for_select([
      ['+47', 47],
      ['+40', 40],
      ['+46', 46],
      ['+351', 35]
    ]), class: 'form-control required' %>
    <%= text_field_tag "#{params_prefix}[number]", '', class: "form-control required" %>
  </p>
  
</div>


Update form markup to use bootstrap 3 form style
Update form markup to use bootstrap 3 form style
