/* Initially hide the additional info content */
.woocommerce-tabs .panel {
    display: none;
}

/* Add a button style to trigger the collapse */
.woocommerce-tabs .panel.collapsed {
    display: block;
}

.woocommerce-tabs .panel-header {
    cursor: pointer;
    padding: 10px;
    background-color: #f4f4f4;
    border: 1px solid #ddd;
    margin: 10px 0;
    text-align: center;
}