.site-nav ul li a {
  background-image: linear-gradient(-90deg, rgb(28.0454545455, 31.2506493506, 33.6545454545) 0%, rgba(28.0454545455, 31.2506493506, 33.6545454545, 0.8) 80%, rgba(28.0454545455, 31.2506493506, 33.6545454545, 0) 100%);
}