diff --git a/templates/authenticate.php b/templates/authenticate.php
index 3a3193ea952..55adf0c56f2 100644
--- a/templates/authenticate.php
+++ b/templates/authenticate.php
@@ -1,28 +1,30 @@
 <?php
 /** @var $_ array */
 /** @var $l \OCP\IL10N */
-style('core', 'publicshareauth');
-script('core', 'publicshareauth');
+\OCP\Util::addStyle('core', 'publicshareauth');
+\OCP\Util::addScript('core', 'publicshareauth');
 ?>
-<form method="post">
-	<fieldset class="warning">
-		<?php if ($_['showBruteForceWarning']) { ?>
-			<div class="warning-info"><?php p($l->t('We have detected multiple invalid password attempts from your IP. Therefore your next attempt is throttled up to 30 seconds.')); ?></div>
-		<?php } ?>
-		<?php if (!$_['wrongpw']) { ?>
-			<div class="warning-info"><?php p($l->t('This conversation is password-protected.')); ?></div>
-		<?php } else { ?>
-			<div class="warning"><?php p($l->t('The password is wrong. Try again.')); ?></div>
-		<?php } ?>
-		<p>
-			<label for="password" class="infield"><?php p($l->t('Password')); ?></label>
-			<input type="hidden" name="requesttoken" value="<?php p($_['requesttoken']) ?>" />
-			<input type="password" name="password" id="password"
-				placeholder="<?php p($l->t('Password')); ?>" value=""
-				autocomplete="new-password" autocapitalize="off" autocorrect="off"
-				autofocus />
-			<input type="submit" id="password-submit"
-				class="svg icon-confirm input-button-inline" value="" disabled="disabled" />
-		</p>
-	</fieldset>
-</form>
+<div class="guest-box">
+	<form method="post">
+		<fieldset class="warning">
+			<?php if ($_['showBruteForceWarning']) { ?>
+				<div class="warning-info"><?php p($l->t('We have detected multiple invalid password attempts from your IP. Therefore your next attempt is throttled up to 30 seconds.')); ?></div>
+			<?php } ?>
+			<?php if (!$_['wrongpw']) { ?>
+				<div class="warning-info"><?php p($l->t('This conversation is password-protected.')); ?></div>
+			<?php } else { ?>
+				<div class="warning"><?php p($l->t('The password is wrong. Try again.')); ?></div>
+			<?php } ?>
+			<p>
+				<label for="password" class="infield"><?php p($l->t('Password')); ?></label>
+				<input type="hidden" name="requesttoken" value="<?php p($_['requesttoken']) ?>" />
+				<input type="password" name="password" id="password"
+					placeholder="<?php p($l->t('Password')); ?>" value=""
+					autocomplete="new-password" autocapitalize="off" autocorrect="off"
+					autofocus />
+				<input type="submit" id="password-submit"
+					class="svg icon-confirm input-button-inline" value="" disabled="disabled" />
+			</p>
+		</fieldset>
+	</form>
+</div>