.mw-option + .mw-option {
    margin-top: 0px !important;
}

.product__block.product__block--buy_buttons {
    margin-top: 0px;
}

.product__block.product__block--variant_picker, .product__block.product__block--description {
    margin-top: 0px;
    margin-bottom: 0px;
}