[data-card-summary-text] {
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: var(--summary-lines, 2);
    -webkit-box-orient: vertical;
}

.card-summary-toggle {
    display: block;
    width: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
    text-align: center;
}

.card-summary-toggle[hidden],
.card-summary-toggle[aria-expanded="false"] .remove,
.card-summary-toggle[aria-expanded="true"] .add {
    display: none;
}

.card-summary-toggle img {
    width: 24px;
    height: 24px;
}