gateway_forms/mustache/first_name.html.mustache
<div class="halfwidth">
<label for="first_name">{{ l10n "donate_interface-donor-first_name" }}</label>
<input id="first_name" name="first_name" value="{{ first_name }}" type="text" title="{{ l10n "donate_interface-donor-first_name" }}" {{# first_name_required }}required {{/ first_name_required }}autocomplete="billing given-name cc-given-name" maxlength="64">
{{{ fieldError "first_name" }}}
</div>