.product-attributes>div select {
    padding-top: 0;
    padding-bottom: 0;
}
.add-to-cart-group .cart-qty input {
    margin-bottom: 0;
    padding-top: 20px;
    padding-bottom: 4px;
} 
.add-to-cart-group .cart-qty select {
    height: 50px;
}