.collapsible-content {
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s;
    max-height: 1000px;
    opacity: 1;
}

.collapsible-content.closed {
    max-height: 0 !important;
    opacity: 0;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    margin-bottom: 0 !important;
}