By default, the platform does not have this option. You can use the following function code to display a fullscreen background image on the login page.

Please follow the steps below:

1. Go to Appearance > Theme Editor.

2. Under Select theme to edit, choose BuddyBoss Child (or whichever theme is active), then click Select.

3. Below Theme Files, select Theme Functions (functions.php).

4. Append the code just before the closing PHP tag “?>”:

function bb_login_custom_css() { ?>
<style>
@media screen and (min-width: 992px) {
  body.login.login-split-page #login{left: 50% !important;}
  body.login.login-split-page .login-split{width: 100% !important;}
  }
</style>
<?php }
add_action( 'login_enqueue_scripts', 'bb_login_custom_css');

5. Click Update File to save the changes.

Note: Any modifications are considered as custom work already. Know more about our Support Policy here: https://www.buddyboss.com/support-policy/