body {
  padding-top: 80px;
}

.page-header {
  position: fixed;
  display: flex;
  align-items: center;
  justify-content: space-between;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  z-index: 10;
  padding: 0 20px;
  box-sizing: border-box;
  color: black;
  background: white;
  border-bottom: 1px solid #ccc;
}

.page-header .top-menu {
  margin: 0;
  list-style: none;
}

.page-header .top-menu li {
  display: inline-block;
}

.page-header .top-menu a {
  text-decoration: none;
  color: inherit;
}

.page-header .top-menu a.active {
  font-weight: 500;
}
