#available_box > * {
  z-index: 10;
}
.draggable-hover {
  z-index: 1000;
}
.voidPlaceholder {
  padding: 45px;
  border: 1px solid #ccc;
}

#sidebar-config {
  #active {
    ul {
      list-style: none;
      padding-left: 0;
    }
  }
}
#available_box > * {
  z-index: 10;
}
.draggable-hover {
  z-index: 1000;
}
.voidPlaceholder {
  padding: 45px;
  border: 1px solid #ccc;
}

Apply reasonnable CSS for admin Sidebars
Apply reasonnable CSS for admin Sidebars
