.site-header,
.about-header {
  background: rgba(28, 28, 26, .48);
  border-bottom: 1px solid rgba(247, 243, 236, .22);
  box-shadow: 0 8px 26px rgba(20, 18, 15, .12);
  -webkit-backdrop-filter: blur(16px) saturate(145%);
  backdrop-filter: blur(16px) saturate(145%);
}