ul.slider > li::after,
  ul li.slider::after       { mask-image: url(https://ketri.gr/pub/file/8f73f1c5/9f48bb03/icon-layout.svg);   }

  ul.contact > li::after,
  ul li.contact::after      { mask-image: url(https://ketri.gr/pub/file/8f73f1c5/83065ad6/icon-contact-form.svg);  }