button[aria-label="Change language"] span {
    font-size: 12px;
}

.shopify-section--main-collection .product-card__quick-buy .button.button--outline[is=custom-button]{
    background:#000 !important;
    border-color:#000 !important;
    color:#fff !important;
}
html .shopify-section--main-collection .product-card__quick-buy .button.button--outline[is=custom-button]:hover {
    background: #fff !important;
    border-color: #000 !important;
    color: #000 !important;
}