.f13-notifier-details {
    padding: .75em;
    border: 1px solid #2271b1;
    border-radius: 3px;
    margin: 0 0 1em;
    background: #f6f7f7;
}

.f13-notifier-details summary {
    padding: .75em;
    margin: -.75em;
    color: black;
}

.f13-notifier-details[open] summary {
    border-bottom: 1px solid #2271b1;
    margin-bottom: .75em;
}