.brightery-buy-now-button {
    margin-inline-start: .5em;
}

.brightery-buy-now-loop {
    margin-top: .5em;
}

@media (max-width: 480px) {
    .single-product .brightery-buy-now-button {
        margin-inline-start: 0;
        margin-top: .6em;
    }
}