details {
    background-color: #f1f1f1;
    padding: .5em .5em 0;
    cursor: pointer;
    margin-bottom: 10px;
}

summary {
    font-weight: bold;
    margin: -.5em -.5em 0;
    padding: .5em;
}

details[open] {
    padding: .5em;
}

details[open] p {
    cursor: default;
    font-style: italic;
}

details[open] a:link {
    font-weight: bold;
}

details[open] summary {
    border-bottom: 1px solid #aaa;
    margin-bottom: .5em;
}

details summary > * {
    display: inline;
}