.site-nav ul li a {
  background-image: linear-gradient(-90deg, rgb(18.4943396226, 19.2056603774, 18.4943396226) 0%, rgba(18.4943396226, 19.2056603774, 18.4943396226, 0.8) 80%, rgba(18.4943396226, 19.2056603774, 18.4943396226, 0) 100%);
}