Adding class to date_select elements

Questions & Help Questions
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1

How can I add a class to each select generated by date_select? I already created a custom builder but I can’t figure out how to add a class name to each select element;

builder = fn b ->
  ~e"""
  <div class="flex">
    <%= b.(:day, []) %>
    <%= b.(:month, []) %>
    <%= b.(:year, []) %>
  </div>
  """
end

Thanks in advance for any help!