mdb-ui-kit/scss/_dropdown.scss

// Dropdown buttons (mobile and desktop) https://www.google.com/design/spec/components/buttons.html#buttons-dropdown-buttons

.dropdown-menu {
  border: 0;
  box-shadow: 0 2px 5px 0 $gray-light;
  //.divider {
  //  background-color: rgba(229, 229, 229, 0.12);
  //}
  li {
    position: relative;
    overflow: hidden;
    a:hover {
      color: $brand-primary;
      background-color: transparent;
    }
  }
}