.site-nav ul li a {
  background-image: linear-gradient(-90deg, rgb(23.3115384615, 25.7230769231, 39.3884615385) 0%, rgba(23.3115384615, 25.7230769231, 39.3884615385, 0.8) 80%, rgba(23.3115384615, 25.7230769231, 39.3884615385, 0) 100%);
}