Hey there,

I am really sorry for the delay of this reply as it is a public holidays for us here.

I've help you applied this following custom css into your current template.

body #es.mod-es-dropdown-menu .dropdown-toggle_:before {

    display: none !important;

}



body #es.mod-es-dropdown-menu .dropdown-toggle_ {

    padding-right: 0px !important;

}

Unfortunately that removes the drop-sown chevron but leaves the white background intact.

I resolved this by adding the following CSS to custom.css to make the white area semi-transparent:

  body #es.mod-es-dropdown-menu .dropdown_.open {

    background: #ffffff3d;

  }

Thanks for updating Marc, glad that your issue is resolved now