.single-product .elementor-widget-container button.cswidget {
    width: auto!important;
    padding: 0 20px!important;
    border-radius: calc(var(--buttonHeight) / 2)!important;
    border: 1px solid #000!important;
    color: #000!important;
}
.single-product .elementor-widget-container button.cswidget:hover {
    background: #000!important;
    color: #fff!important;
}