Dropdown arrow showing in Divi

Hi

I have the same problem as described here:
https://projectdmc.org/support/topic/dropdown-arrow-showing-on-other-swatches-types/

I have tried the CSS given there but does not work. I have also tried

.et_pb_wc_add_to_cart form.cart .variations td.value span:after {
    display: none !important;
}

But does not work.

Any help would be appreciated