html {
  scroll-behavior: smooth;
}

.section-nav li.active > a {
  color: #333;
  font-weight: 500;
  list-style-type: inside;
  /*text-decoration: underline;*/
}

.section-nav {
  /*position: sticky;*/
  /*top: 2rem;*/
  /*z-index: -1;*/
  align-self: start;
  position: absolute;
  margin-left: 5%;
  padding-left: 0;
}

.section-nav a {
  text-decoration: none;
  display: block;
  padding: .125rem 0;
  color: #ccc;
  transition: all 50ms ease-in-out;
}

.section-nav a:hover, .section-nav a:focus {
  color: #666;
}

ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* * page layout * */

main {
  /*display: flex;*/
  /*grid-template-columns: 1fr 15em;*/
  /*max-width: 100em;*/
  /*width: 90%;*/
  margin-left: 30%;
  margin-right: 248px;
}

section {
  padding-bottom: 6rem;
}

.side-section-nav {
  position: sticky;
  top: 1.5rem;
  display: flex;
  align-self: start;
}

.side-section-ul li {
  margin-left: 1rem;
}

/* /////////////////////////// */

.side-nav-menu {
  display: flex;
  flex-direction: column;
}

.side-nav-menu-item {
  color: var(--text-dark-inactive-color);
  margin: 10px 0;
  width: min-content;
  white-space: nowrap;
  font-weight: var(--text-bold-medium-weight);
  transition: var(--transition-time) ease;
}

.side-nav-menu-item-active {
  color: #333 !important;
  font-weight: 500;
  list-style-type: inside;
}

.side-nav-menu-item:hover {
  color: #666;
  text-transform: none;
  text-decoration: none;
}

.side-nav-menu-item:not(.side-nav-menu-item-active):hover {
  color: var(--text-dark-color);
}

.side-nav-menu-item::before {
  content: "";
  /*border: 2px solid #7bb8fa46;*/
  /*background-color: #7bb9fa46;*/
  height: 50%;
  width: 2px;
  transform: translateY(-1rem);
  margin-right: 10px;
  opacity: 0;
  transition: var(--transition-time) ease-in;
}

.side-nav-menu-item-active::before {
  border: 2px solid var(--main-blue-color);
  background-color: var(--main-blue-color);
  opacity: 1;
}

.side-nav-menu-item:hover::before {
  opacity: 1;
}