#header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 95px;
  position: sticky;
  top: 0;
  backdrop-filter: blur(25px);
  background-color: #f3f3f38c;
  z-index: 999;
  border-bottom: 1px solid #eee;
  box-shadow: 0px 3px 20px rgba(0,0,0,0.1);
}

#header .links a {
  text-decoration: none;
  color: #333;
  font-size: 20px;
  margin-right: 8px;
  position: relative;
  cursor: pointer;
}

#header .links a::before {
  content: '';
  position: absolute;
  bottom: 0;
  width: 0%;
  height: 10px;
  background-color: #8a97ef;
  z-index: -1;
  border-radius: 2px;
  transition: 0.8s cubic-bezier(0.16, 0.68, 0.29, 0.93);
}

#header .links a:hover::before,
#header .links a[data-active]::before {
  width: 100%;
}