.ui-accordion-header {
    background:none;
    background-color:#ddd !important;
    border:1px solid #ddd !important;
    border-radius:3px !important;
    color:#212529;
}

.ui-widget-content {
    background:none;
    border:1px solid #ddd !important;
}

.ui-accordion-header-active {
    color:#28a745 !important;
}