.woocommerce.single-product .product {
    margin-top: 0;
}

.woo-variation-swatches .variable-items-wrapper .variable-item:not(.radio-variable-item) {
    height: auto;
}

body.single.woocommerce .product form.cart {
    margin-top: 0;
} 

.woo-variation-swatches .variable-items-wrapper .variable-item:not(.radio-variable-item).button-variable-item {
    height: auto;
    width: 100%;
}

.woo-variation-swatches .wvs-style-squared.variable-items-wrapper .variable-item:not(.radio-variable-item).button-variable-item {
    width: 100%;
}

.woocommerce div.product form.cart .button {
    height: auto;
    font-size: 24px;
}