Backdrop does not work for Carousel Widget

[zairbee]

Carousel Element in HTML Inspector:
<div class="duration-700 ease-in-out bg-white dark:bg-gray-800 z-9 absolute inset-0 transition-transform transform translate-x-0 **z-20**" data-carousel-item="">

Sidebar Backdrop:

<div class="fixed inset-0 **z-10** hidden bg-gray-900/50 dark:bg-gray-900/90" id="sidebarBackdrop"