.site-nav ul li a {
  background-image: linear-gradient(-90deg, rgb(26.7222222222, 26.037037037, 29.462962963) 0%, rgba(26.7222222222, 26.037037037, 29.462962963, 0.8) 80%, rgba(26.7222222222, 26.037037037, 29.462962963, 0) 100%);
}