body#product .caz-product-extra-subtitle {
    color: #111827;
    font-family: Montserrat, Arial, sans-serif;
    font-size: 15px;
    font-weight: 700;
    line-height: 1.35;
    margin: 4px 0 6px;
}

body#product .caz-product-extra-subtitle:empty {
    display: none;
}