.site-nav ul li a {
  background-image: linear-gradient(-90deg, rgb(43.6607142857, 10.1875, 71.3125) 0%, rgba(43.6607142857, 10.1875, 71.3125, 0.8) 80%, rgba(43.6607142857, 10.1875, 71.3125, 0) 100%);
}