[Support request] Customizer / carousel / display none

Hi there,

I migrated an owl carousel from one site to another. The carousel itself is working fine. However, it is only visible when the Customizer is active. See screen recording.

In the Additional CSS section, I added the following:

/* Owl carousel - Position and style navigation icons */

#referenzen button {
    background-color: rgba(255, 255, 255, 0);
}

#referenzen {
    position: relative;
}

#referenzen .owl-nav > button  {
    position: absolute;
    top: 35%;
    z-index: 100;
}

#referenzen .owl-nav .owl-prev {
    left: 0;
}

#referenzen .owl-nav .owl-next {
    right: 0;
}

@media(max-width: 768px) {
.nav-btn {
    display:none
}
}

My working assumption is that there is a display: none setting that I need to remove but I’m not able to find it ;-/

Any advice is much appreciated.

Best,
Jan