.woocommerce_variable_attributes .options label {
    display: inline-block;
    padding: 0 !important;
}

.woo-kunaki-upgrade-link {
    color: green;
    font-weight: bold;
}

.kunaki-upgrade-btn {
    color: #ffffff;
    border-color: #0071a1;
    background: #0071a1;
    vertical-align: top;
    padding: 5px 10px;
    text-decoration: none !important;
    display: block;
    width: 85px;
    -webkit-appearance: none;
    border-radius: 3px;
    margin-top: 5px;
}

.kunaki-upgrade-btn:hover {
    color: #ffffff;
    background: #0089c9;
}