.f-sortable-empty-margin{
    margin-bottom:20px;
}

.f-sortable-container{
    border:1px solid;
    user-select: none;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    position:relative
}
.clone-object-sortable{
    margin-left:20px;
    z-index:5
}