nextcloud-server/core/templates/login.php

<?php /** @var $l \OCP\IL10N */ ?>
<?php
script('core', 'dist/login');
?>

<div id="login"></div>
<?php if (!empty($_['alt_login'])) { ?>
<form id="alternative-logins">
	<fieldset>
		<ul>
			<?php foreach($_['alt_login'] as $login): ?>
				<li><a class="button" href="<?php print_unescaped($login['href']); ?>" ><?php p($login['name']); ?></a></li>
			<?php endforeach; ?>
		</ul>
	</fieldset>
</form>
<?php }