.fs-btn-dark {
    background-color: #000;
    color: white;
    border: 1px solid #000;
    padding: 6px 18px;
    font-size: 12px;
    border-radius: 4px;
    font-weight: 500;
}

.fs-btn-dark:hover {
    background-color: #000;
    border-color: #000;
    color: white;
}